Reforming the Portsmouth Yardstick System
Printed From: Yachts and Yachting Online
Category: Dinghy classes
Forum Name: Dinghy development
Forum Discription: The latest moves in the dinghy market
URL: http://www.yachtsandyachting.com/forum/forum_posts.asp?TID=13767
Printed Date: 28 Jun 25 at 4:32am Software Version: Web Wiz Forums 9.665y - http://www.webwizforums.com
Topic: Reforming the Portsmouth Yardstick System
Posted By: johnbrooker
Subject: Reforming the Portsmouth Yardstick System
Date Posted: 07 Apr 21 at 2:27pm
Over the last few weeks I've been writing an article on how and if we should change the Portsmouth Yardstick system to make it fairer. It'd be great to make this as comprehensive and accurate as possible so I'd appreciate your feedback.
Here's hoping some change will come of it (though I doubt it will). 
http://dinghyracingtips.com/blog/is-the-rya-portsmouth-yardstick-system-fair-handicap-sailing-results/" rel="nofollow - https://dinghyracingtips.com/blog/is-the-rya-portsmouth-yardstick-system-fair-handicap-sailing-results/
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Replies:
Posted By: Grumpycat
Date Posted: 07 Apr 21 at 2:54pm
Oh dear god for the first time in decades we haven’t had 30 pages of recycled PY TOSH lol.
Then you go and poke the bear 
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Posted By: davidyacht
Date Posted: 07 Apr 21 at 3:29pm
Lights blue touch paper ...
------------- Happily living in the past
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Posted By: Cirrus
Date Posted: 07 Apr 21 at 3:46pm
Deck chairs out with favorite snacks and tinnies on the table alongside ... 
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Posted By: jeffers
Date Posted: 07 Apr 21 at 4:35pm
You are assuming that the system is actually broken.....
It just needs to be used as intended not as gospel (but I'll sit back with my popcorn with the rest now).
------------- Paul
----------------------
D-Zero GBR 74
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Posted By: johnbrooker
Date Posted: 07 Apr 21 at 4:54pm
I agree Paul. It would be a lot better if it was used as intended.
But, I don't see us using the same system in 50 years time. Technology will allow us to be much more precise in the handicapping. We have the tech to do this now. We probably need to go one step at a time rather than leaping ahead.
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Posted By: Grumpycat
Date Posted: 07 Apr 21 at 5:09pm
Originally posted by jeffers
You are assuming that the system is actually broken.....
It just needs to be used as intended not as gospel (but I'll sit back with my popcorn with the rest now). |
Totally agree . Will send you an extra bucket of popcorn as a prize if anyone posts anything new and or interesting 
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Posted By: KazRob
Date Posted: 07 Apr 21 at 5:54pm
The PY system is not perfect, but it is simple enough to be able to do quick calcs in your head to gauge your performance on the water, is based on factual returns (not that I understand exactly how it works) and time-on-time generally works really well compared to time-on-distance. Having a single number isn't perfect but it prevents arguments about whether it was 8 knots or 10knots and if the clubhouse anemometer reads the same wind as on the water etc. Average lap racing also helps keep both the fast and slow boats sailing in roughly the same conditions. The hard part is how the crew skill factor is applied as nobody wants to hear they are considered less skilled than their clubmates. Maybe automated results systems could help smooth that out and/or generate reasonable personal handicaps. As ever I'd recommend any would be handicap improver to read "Yacht Rating" by Peter Johnson. Many rule makers or handicap makers have tried over the centuries, but there's never been a way to stop competitive humans seeking a competitive advantage anywhere it can be found it seems.
------------- OK 2249
D-1 138
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Posted By: iGRF
Date Posted: 07 Apr 21 at 6:30pm
You're assuming anyone gives a damn these days, we're all long past thinking anyone is remotely interested in improving the system beyond what they already have, now if it could be linked to diversity and encouragement thereof I'm sure you'd find some takers at Ah Why Eh?
However I can't resist, here's how it could be done.
1) Start an organisation that actually enjoys handicap racing and wishes to encourage more participants lets call it the Handicap Class Racing Association.
2)Create a formula based website. Boat Handicaps fixed upon given dimensions, lenght,beam, hull weight, sail size and sailnumber, you dial in and get your boats handicap.
3)Issue members their individual handicap, based on skills, physical dimensions height, weight,experience, random best results, issue handicap from say 100 to scratch.
Leave it to the individual to apply for and set his/her own handicap to race under with a view to reducing it over time. Golf style.
Dump the PY, and every human element that goes with it.
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Posted By: Rupert
Date Posted: 07 Apr 21 at 6:41pm
Diversity of boats - isn't that what PY is all about?
As for the rest, you just end up with type formed designs which go slow but rate slower. See pretty much every measurement system ever.
------------- Firefly 2324, Puffin 229, Minisail 3446 Mirror 70686
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Posted By: iGRF
Date Posted: 07 Apr 21 at 8:20pm
Originally posted by Rupert
As for the rest, you just end up with type formed designs which go slow but rate slower. See pretty much every measurement system ever. |
How so? When the boats are already built. Can you really see a glut of new builds, just to fool a handicapsystem, not like now.. Oh wait.
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Posted By: davidyacht
Date Posted: 07 Apr 21 at 9:00pm
Problem with formula based PY is it would not overcome the perceived difference in performance in different generations of one designs ... new Solo is built to the same rules, weight, measurements as a 20 year old Solo, but people keep saying that the latest Solos are noticeably faster than the old ones ... ho hum
------------- Happily living in the past
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Posted By: mongrel
Date Posted: 08 Apr 21 at 9:14am
Originally posted by davidyacht
Problem with formula based PY is it would not overcome the perceived difference in performance in different generations of one designs ... new Solo is built to the same rules, weight, measurements as a 20 year old Solo, but people keep saying that the latest Solos are noticeably faster than the old ones ... ho hum |
The right formula could allow for that, factor in year built, material type, construction type into the formula?
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Posted By: KazRob
Date Posted: 08 Apr 21 at 9:43am
People have been trying to create mathematical formulas to rate sailing boats for at least a couple of centuries and in every case they have been found wanting once competitive pressures come to bear on them. For instance the IOR started as a single page of A4 but ended up as dozens of pages of notes, caveats and definitions I believe. The closest seems to be the full blown VPP programme, but they need constant attention and tweaks as well. Again I recommend having a read of the 'Yacht Rating' book for a fascinating insight to how the same issues on calculating handicaps come up in every generation that tries. If it was simple it would have been fixed decades ago! So IMO there's a lot to be said for simplicity in using actual race results to assign a handicap like the PY does despite it's failings.
------------- OK 2249
D-1 138
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Posted By: Cirrus
Date Posted: 08 Apr 21 at 12:58pm
'Formula' racing inevitably tends towards evolving into a class of its own of course - people will build or select 'their' boats in relation to the rules applied. Then if this group want to race more widely you have to set a handicap for your formula in relation to other formulas or 'classes'.... Some existing classes are in effect 'formula' classes already, they are often called 'development classes'.
(The road to hell was always paved with good intentions .... )
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Posted By: Guests
Date Posted: 08 Apr 21 at 1:36pm
Posted By: iGRF
Date Posted: 08 Apr 21 at 7:57pm
The simplicity and difference between all your ratings of old, would be the fact you are combining two. The Boat, fixed around it's stated measurement and the helm who's intention can either be to work hard to reduce his/her handicap, or adjust according to his/her spreading waist line, either way it takes the handicap back into the realms of those that wish to use it, rather than a bunch of what shall I call them this time? Not particularly bothered soviet committee types, foisting it upon the world in a totalitarian manner.
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Posted By: Sam.Spoons
Date Posted: 08 Apr 21 at 8:25pm
Personal handicaps are a bit of a nonsense TBH, all they do is give crap sailors a chance to win (and I'm one of those crap sailors so qualified to hold this opinion)
------------- Spice 346 "Flat Broke"
Blaze 671 "supersonic soap dish"
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Posted By: johnbrooker
Date Posted: 08 Apr 21 at 8:41pm
There is certainly an issue with seeing all of one class as of equal speed. There can be significant jumps forward in design. e.g. the Solos after sail number 4100 got significantly faster. What you could do is have a handicap for each year- the right software could easily work out what the handicaps should be.
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Posted By: johnbrooker
Date Posted: 08 Apr 21 at 8:43pm
On the personal handicap issue - they're nice and all but pretty irrelevent to racing which by definition is a competition to see who is the best. Personal handicaps and the Portsmouth Yardstick are two separate matters.
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Posted By: iGRF
Date Posted: 08 Apr 21 at 9:57pm
What's wrong with varying who wins the chocolates? Surely the idea is to broaden participation, not retain a pathetic duck pond pecking order,which will always be, by defintion caused by Body Shape, weight, experience.
Like you lot always bray, if you want all that go sail a class, do some open meetings, get good, train down the gym spend every waking moment on the water, learn how to be a total a**hole, use every dirty sh*t trick to get what you want and when it doesn't happen jump into the press boat and start beating up cameramen.
If very dog doesn't have at least one day, they just slope off and pee up some other wall.
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Posted By: johnbrooker
Date Posted: 08 Apr 21 at 10:38pm
There's nothing wrong with personal handicaps but they are a seperate issue. what we do at our club which works quite well is apply the personal handicap to the weekly class race- so we have two sets of results from one race. If you have a race with results that are just personal handicaps the participation tends to go down.
I agree with you the desire to win can make you unethical (but by no means in all cases). People like that will always exist. If you stop them winning they'll just go elsewhere.
It's a difficult balance but I think the easiest and best solution is how we do it- one race- two sets of results.
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Posted By: Sam.Spoons
Date Posted: 09 Apr 21 at 7:31am
A new sailor is unlikely to expect to win, I'm not sure how penalising him when he does get good enough to win is going to encourage him to sail more?
The current system does give every dog it's day, Solos and Ents in the light on a duckpond, 5ohs and I14's on the sea in a breeze and all points in-between.
------------- Spice 346 "Flat Broke"
Blaze 671 "supersonic soap dish"
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Posted By: robin34024
Date Posted: 09 Apr 21 at 8:43am
Originally posted by mongrel
Originally posted by davidyacht
Problem with formula based PY is it would not overcome the perceived difference in performance in different generations of one designs ... new Solo is built to the same rules, weight, measurements as a 20 year old Solo, but people keep saying that the latest Solos are noticeably faster than the old ones ... ho hum |
The right formula could allow for that, factor in year built, material type, construction type into the formula? |
Even this isn't infallible. Take an Enterprise for example - a 1980's Lufkin/Lloyd/Ovington/possibly other Ent is likely to be fast, even at national level. Heck, even some older boats by Avacraft/Bacon/Smith and Davies/possibly others are likely to be fast. But, take an early Holt FRP Ent that's been ragged, and it's likely to be slower. Playing devils advocate a bit here, but some things can't just be reduced to formula.
This isn't unique to Ents - an early Woof Albacore that hasn't been abused is most likely to be faster than a Fosrite glass boat. A Cory GRP Streaker is liklely to be slower than a Gillard wood of the same vintage. Take the Wooden Solo that GRF mentioned in another thread. I'm sure there are more examples - there are always outliers, and development isn't always linear.
And don't get me started on how this would work for some development classes... 
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Posted By: Guests
Date Posted: 09 Apr 21 at 10:12am
Why would you want a formula to differentiate between good and bad examples of a class design? Buy a slow boat and you shouldn’t expect to win. All Enterprises have the same potential, if you buy a dog it shouldn’t expect a different handicap to an an Ovi.
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Posted By: JimC
Date Posted: 09 Apr 21 at 10:15am
Originally posted by Sam.Spoons
A new sailor is unlikely to expect to win, I'm not sure how penalising him when he does get good enough to win is going to encourage him to sail more? |
There are other achievements possible than simply fastest sailor, and a club may wish to give prizes for some of those. Improvement year on year for instance, or exceptional performance on the day. Various forms of personal handicap can let the club give prizes for such. Personal handicaps can also act as a visible measure of progress. I recall, for instance, the smile on a youngsters face when he was first ranked as faster than his father.
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Posted By: davidyacht
Date Posted: 09 Apr 21 at 10:39am
Personal handicap pursuit races can be fun
------------- Happily living in the past
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Posted By: iGRF
Date Posted: 09 Apr 21 at 10:58am
My logical mind always assumed initially that the yardstick, by virtue of it's name even, was a measure for performance you could expect from a given boat, which I still think should be a given and only varied if something physical actually changes to alter that performance.
Now two things actually contribute, the boat and the driver, you could go a whole lot further and like Golf courses apply whatever they do, say Par for a given wind condition, it's not beyond the wit and science of man, but there needs to be logic. Something to understand, other than the ravings of a 'secret bunch of agenda driven buffers in smoke filled rooms' as the quote goes.
It also needs to be adminstered by people with enthusiasm for it, the desire to make it better, more understandable, more welcome, more efficient, whatever, not just use it as a protection device for existing classes as it has been these many years.
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Posted By: iGRF
Date Posted: 09 Apr 21 at 11:02am
Originally posted by JimC
Personal handicaps can also act as a visible measure of progress. I recall, for instance, the smile on a youngsters face when he was first ranked as faster than his father.
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Above all, this.
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Posted By: Sam.Spoons
Date Posted: 09 Apr 21 at 11:02am
Originally posted by iGRF
It also needs to be adminstered by people with enthusiasm for it, the desire to make it better, more understandable, more welcome, more efficient, |
Isn't that called 'The Great Lakes Handicap"?
------------- Spice 346 "Flat Broke"
Blaze 671 "supersonic soap dish"
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Posted By: Oli
Date Posted: 09 Apr 21 at 12:07pm
the majority that use the system do not understand it or perhaps care to, more to the point the governing body should prescribe more and advise less on how it should be implemented at club level, that way the weight of what those volunteers who do what they can to run it locally wont be cast as witches and wizards and thrown in boiling water.
the issue isnt the numbers, its how the numbers are percieved to be attained and maniulated thats the issue, just read back on this forum for evidence.
a clear and open policy from the top would allow far more local adjustments than are currently seen and perhaps peoples percieved enjoyment would go up.
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Posted By: johnbrooker
Date Posted: 09 Apr 21 at 12:29pm
I agree Oli. Whilst that won't solve every problem it would certainly solve a lot of them. The RYA just needs to take some of the blame that would otherwise be hurled at the General Committee.
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Posted By: Sussex Lad
Date Posted: 09 Apr 21 at 12:38pm
-----------When the LORD finished speaking to Moses on Mount Sinai, he gave him the two tablets of the covenant law, the tablets of stone inscribed by the finger of God.----------
.......think he also said "..........and don't b**ger around with them"
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Posted By: Rupert
Date Posted: 09 Apr 21 at 1:03pm
Loving the myths that keep on recurring.
Firstly, the RYA describe pretty clearly how the yardstick system works. Took 30 seconds typing slow on Google.
https://www.rya.org.uk/racing/Pages/portsmouthyardstick.aspx
They don't go round every dinghy park in britain and explain it in person to every sailor, they maybe expect sailors to meet them half way. They will come to visit clubs if asked.
Secondly, a average performance of everyone in the fleet, barring outliers, doesn't make Portsmouth Yardstick a personal handicap system. The vast majority of classes will have a very similar spread of talent. I've owned many boats, and find myself in similar positions when fleet racing in all of them. I doubt I'm the only one. Some might have world class sailors, but usually they won't be handicap racing, and generally there are lots of returns from classes where they are, so distortion is minimal.
The measurement idea has been pushed by grf before, and it's been suggest before to run it alongside PY and see what happens. Actually, some number crunching with old results would produce similar data. So, why not do this? Mainly I suspect because it should be "someone else" serving this up on a plate. Starting a Handicap Class Association to run it should be pretty easy, too, if enough people are fed up with PY.
------------- Firefly 2324, Puffin 229, Minisail 3446 Mirror 70686
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Posted By: Guests
Date Posted: 09 Apr 21 at 2:01pm
Originally posted by Rupert
Loving the myths that keep on recurring.
Firstly, the RYA describe pretty clearly how the yardstick system works. Took 30 seconds typing slow on Google.
https://www.rya.org.uk/racing/Pages/portsmouthyardstick.aspx
. |
To be fair, there is no document that sets out how the handicaps are calculated other than “analysing the data”, which is a little opaque. I know Jim and Mark have described the process in detail on here somewhere, but I can’t find it.
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Posted By: iGRF
Date Posted: 09 Apr 21 at 2:15pm
So they do in fact come to clubs, we did all that, we then submitted results, we have two classes that win, either the Contender or the Laser and what does the 'system' recommend with it's 'confidence' after five more painful years? Slower numbers for both classes, it's f**ked, it doesn't do what it says on the tin.
Great Lakes is an admirable attempt and does at least offer us a bit more enthusiasm, the only way I can race the Farr is thanks to them, but they're a particular type of water, smooth with big corners fast classes can stretch their legs so slow classes have to have slower numbers to 'ketchup'
What's needed is a system that doesn't just respond to big numbers submitted by small clubs on ponds and great lakes but brings coastal clubs into play, we need a group, but we need to know who and what they are and they need to be accountable. A Handicap Racing Class of GB could include reps from inland coastal and great lakes, but be a bit more corinthian.
Hell they wouldn't need to even drive to meet these days of Zoom.
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Posted By: mongrel
Date Posted: 09 Apr 21 at 6:49pm
Originally posted by robin34024
Originally posted by mongrel
Originally posted by davidyacht
Problem with formula based PY is it would not overcome the perceived difference in performance in different generations of one designs ... new Solo is built to the same rules, weight, measurements as a 20 year old Solo, but people keep saying that the latest Solos are noticeably faster than the old ones ... ho hum |
The right formula could allow for that, factor in year built, material type, construction type into the formula? |
Even this isn't infallible. Take an Enterprise for example - a 1980's Lufkin/Lloyd/Ovington/possibly other Ent is likely to be fast, even at national level. Heck, even some older boats by Avacraft/Bacon/Smith and Davies/possibly others are likely to be fast. But, take an early Holt FRP Ent that's been ragged, and it's likely to be slower. Playing devils advocate a bit here, but some things can't just be reduced to formula.
This isn't unique to Ents - an early Woof Albacore that hasn't been abused is most likely to be faster than a Fosrite glass boat. A Cory GRP Streaker is liklely to be slower than a Gillard wood of the same vintage. Take the Wooden Solo that GRF mentioned in another thread. I'm sure there are more examples - there are always outliers, and development isn't always linear.
And don't get me started on how this would work for some development classes...  |
So that’s your reason why things should stay the way they are?
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Posted By: Rupert
Date Posted: 09 Apr 21 at 8:08pm
Originally posted by iGRF
So they do in fact come to clubs, we did all that, we then submitted results, we have two classes that win, either the Contender or the Laser and what does the 'system' recommend with it's 'confidence' after five more painful years? Slower numbers for both classes, it's f**ked, it doesn't do what it says on the tin.
Great Lakes is an admirable attempt and does at least offer us a bit more enthusiasm, the only way I can race the Farr is thanks to them, but they're a particular type of water, smooth with big corners fast classes can stretch their legs so slow classes have to have slower numbers to 'ketchup'
What's needed is a system that doesn't just respond to big numbers submitted by small clubs on ponds and great lakes but brings coastal clubs into play, we need a group, but we need to know who and what they are and they need to be accountable. A Handicap Racing Class of GB could include reps from inland coastal and great lakes, but be a bit more corinthian.
Hell they wouldn't need to even drive to meet these days of Zoom. |
So set it up. On here, on Facebook, get people involved, invite them to a zoom meeting. It worked for the cvrda more than 20 years ago, so no reason it shouldn't now. You have a core of measurement supporters on here, so go for it.
------------- Firefly 2324, Puffin 229, Minisail 3446 Mirror 70686
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Posted By: Grumpycat
Date Posted: 10 Apr 21 at 11:29am
Cheers Rupert. You now win the prize of a bucket of popcorn for posting something new and interesting.
Not that anyone will act on it, but it will mean we will get another 10 page of ‘ interesting chat ‘ 
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Posted By: robin34024
Date Posted: 10 Apr 21 at 11:42am
Originally posted by mongrel
Originally posted by robin34024
Originally posted by mongrel
Originally posted by davidyacht
Problem with formula based PY is it would not overcome the perceived difference in performance in different generations of one designs ... new Solo is built to the same rules, weight, measurements as a 20 year old Solo, but people keep saying that the latest Solos are noticeably faster than the old ones ... ho hum |
The right formula could allow for that, factor in year built, material type, construction type into the formula? |
Even this isn't infallible. Take an Enterprise for example - a 1980's Lufkin/Lloyd/Ovington/possibly other Ent is likely to be fast, even at national level. Heck, even some older boats by Avacraft/Bacon/Smith and Davies/possibly others are likely to be fast. But, take an early Holt FRP Ent that's been ragged, and it's likely to be slower. Playing devils advocate a bit here, but some things can't just be reduced to formula. This isn't unique to Ents - an early Woof Albacore that hasn't been abused is most likely to be faster than a Fosrite glass boat. A Cory GRP Streaker is liklely to be slower than a Gillard wood of the same vintage. Take the Wooden Solo that GRF mentioned in another thread. I'm sure there are more examples - there are always outliers, and development isn't always linear. And don't get me started on how this would work for some development classes...  |
So that’s your reason why things should stay the way they are? |
No, it's my reason for not wanting to handicap boats on a generalisation of age/material.
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Posted By: H2
Date Posted: 12 Apr 21 at 9:25am
Originally posted by iGRF
So they do in fact come to clubs, we did all that, we then submitted results, we have two classes that win, either the Contender or the Laser and what does the 'system' recommend with it's 'confidence' after five more painful years? Slower numbers for both classes, it's f**ked, it doesn't do what it says on the tin.
Great Lakes is an admirable attempt and does at least offer us a bit more enthusiasm, the only way I can race the Farr is thanks to them, but they're a particular type of water, smooth with big corners fast classes can stretch their legs so slow classes have to have slower numbers to 'ketchup'
What's needed is a system that doesn't just respond to big numbers submitted by small clubs on ponds and great lakes but brings coastal clubs into play, we need a group, but we need to know who and what they are and they need to be accountable. A Handicap Racing Class of GB could include reps from inland coastal and great lakes, but be a bit more corinthian.
Hell they wouldn't need to even drive to meet these days of Zoom. |
I think I have been to most of the Great Lakes races for the last few years and I do not recall ever seeing you come along to race? Please do correct me if I am wrong. My point is - all this moaning and yet when there is a system that is better than the RYA one you dislike....have you actually supported it by showing up and racing?
------------- H2 #115 (sold)
H2 145
OK 2082
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Posted By: Guests
Date Posted: 12 Apr 21 at 9:43am
Having to travel hundreds of miles to sail in freezing winter conditions on a concrete bowl, just to use the handicap system you think you might prefer? Not really the best way to increase participation!
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Posted By: Rupert
Date Posted: 12 Apr 21 at 9:45am
Surely Great Lakes is simply (or not simply, as loads of effort is put into it) a manifestation of PY being used in the way the PYAG suggest it is, with enough returns to make valid decisions?
------------- Firefly 2324, Puffin 229, Minisail 3446 Mirror 70686
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Posted By: mongrel
Date Posted: 12 Apr 21 at 12:27pm
Originally posted by robin34024
Originally posted by mongrel
Originally posted by robin34024
Originally posted by mongrel
Originally posted by davidyacht
Problem with formula based PY is it would not overcome the perceived difference in performance in different generations of one designs ... new Solo is built to the same rules, weight, measurements as a 20 year old Solo, but people keep saying that the latest Solos are noticeably faster than the old ones ... ho hum |
The right formula could allow for that, factor in year built, material type, construction type into the formula? |
Even this isn't infallible. Take an Enterprise for example - a 1980's Lufkin/Lloyd/Ovington/possibly other Ent is likely to be fast, even at national level. Heck, even some older boats by Avacraft/Bacon/Smith and Davies/possibly others are likely to be fast. But, take an early Holt FRP Ent that's been ragged, and it's likely to be slower. Playing devils advocate a bit here, but some things can't just be reduced to formula. This isn't unique to Ents - an early Woof Albacore that hasn't been abused is most likely to be faster than a Fosrite glass boat. A Cory GRP Streaker is liklely to be slower than a Gillard wood of the same vintage. Take the Wooden Solo that GRF mentioned in another thread. I'm sure there are more examples - there are always outliers, and development isn't always linear. And don't get me started on how this would work for some development classes...  |
So that’s your reason why things should stay the way they are? |
No, it's my reason for not wanting to handicap boats on a generalisation of age/material. |
Well its not a great reason in my opinion. Old boats getting the odd good result, is generally down to a good sailor and a specific set of conditions, i.e. light winds, or extremely strong winds. Each class probably has the odd one or two old boats capable of a good result on their day, it isn’t many. No one who wants to get into a class to have a good nationals/worlds thinks, “what we need is a 25 year old avacraft to do really well”! I’ve sailed development classes too, its amazing how you can have a range of different designs and shapes but find there’s not much difference in speed at the front end of the fleets. I think a good formula system could work, and average wind and sea state could be factored into the formula too. It would be nice to go racing and not know who’s going to win until the formula spits the result out.
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Posted By: Old bloke
Date Posted: 12 Apr 21 at 4:33pm
The trouble with age allowances is identifying those factors which are actually age related and not fixable. A lot of old boats are sheds. Why should I give time to old sails, crap foils and a pebble dash paint finish. A lot of old boat sailors are second division, keen people tend to have good boats. Other things can be strictly down to age, frp solos (although most are moulded from old designs I believe), wide bow fireballs etc.
The Merlin Rockets have been quite active in running age related handicaps, but now the early Canterbury Tales are nearly old enough to qualify and they are rather stuck on where to go next.
I think all in all,I am glad I am not going to be the man in charge
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Posted By: Sam.Spoons
Date Posted: 13 Apr 21 at 8:48am
Originally posted by Old bloke
The trouble with age allowances is identifying those factors which are actually age related and not fixable. A lot of old boats are sheds. Why should I give time to old sails, crap foils and a pebble dash paint finish. A lot of old boat sailors are second division, keen people tend to have good boats. Other things can be strictly down to age, frp solos (although most are moulded from old designs I believe), wide bow fireballs etc.
The Merlin Rockets have been quite active in running age related handicaps, but now the early Canterbury Tales are nearly old enough to qualify and they are rather stuck on where to go next.
I think all in all,I am glad I am not going to be the man in charge
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It can be done on a class by class basis (the PYC aren't going to do it so by the CAs will have to). Merlins have a fairly simple answer, freeze the age at a specific year instead of a certain age, anything pre Canterbury Tales (with special dispensation for any old design boats built after the first 'Tales) get an allowance (Solo's likewise, but pre the first FRP boat). In the case of the Merlin make the allowance for old boats with a modern carbon rig and have an extra allowance for an old tin rig. That's it, one number, two allowances* (let the CVDRA take care of the real oldies). The Merlin a have a pretty comprehensive database of boats so it should be easy enough to keep track.
* Be conservative with the allowances, as Old Bloke says, old boats are usually sailed by less accomplished sailors and you still want the best crew to win, you just want to compensate for the age factor of the boat not the sailors lesser skill level. If you overdo it some highly talented pot hunter is going to buy an old boat and clean up.
------------- Spice 346 "Flat Broke"
Blaze 671 "supersonic soap dish"
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Posted By: Mark Aged 42
Date Posted: 16 Apr 21 at 11:46am
So how many factors should be taken in to consideration when allocating the PY for the day? My 30 second contemplation : - Boat
- Boat age
- Water type: Sea/Inland/Estuary
- Wind: light/medium/strong
- Helm height
- Helm weight
- Helm athleticism/age
- Crew height
- Crew weight
- Crew athleticism/age
- Beat length against the tide
- Beat length with the tide
- Beat length across the tide
- Reaching length against the tide
- Reaching length with the tide
- Reaching length across the tide
- Run length against the tide
- Run length with the tide
- Run length across the tide
I'm sure you lot can add considerably to this. And create the matching formula :-)
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Posted By: Mark Aged 42
Date Posted: 16 Apr 21 at 11:51am
Christ the formatting on this forum is from the Dark Ages
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Posted By: davidyacht
Date Posted: 16 Apr 21 at 1:34pm
^ if the sample was big enough and the data from the returns detailed enough, I am sure you could have some app that would allow you to tweak the PY, but collecting the data would probably put clubs off from submitting any returns, and the volunteer RO would have to establish all of the factors in order calculate the results ... making the results more subjective, so he will take the flak instead of an anonymous RYA committee, so we would end up with no RO’s. Suddenly the present PY system seems rather good. I have done a couple of series, one in cruisers and another at Chichester, where a minute was knocked off our PY each week until we stopped winning, this seemed a good solution to banditry and presented an interesting challenge!
------------- Happily living in the past
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Posted By: Mark Aged 42
Date Posted: 16 Apr 21 at 2:43pm
And when you get a new boat?
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Posted By: Guests
Date Posted: 16 Apr 21 at 3:35pm
I ran the race results from an old club race using probabilistic PYs. It’s not so easy to format posts on this forum but here goes:
The handicaps used:
The results:
Tablulated:
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Posted By: Guests
Date Posted: 18 Apr 21 at 7:45am
An actual, practical, suggestion with a worked example seems to have killed the conversation!
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Posted By: davidyacht
Date Posted: 18 Apr 21 at 7:46am
I think that I would need to understand it in order to comment
------------- Happily living in the past
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Posted By: Rupert
Date Posted: 18 Apr 21 at 8:11am
Sorry, been working at the sailing club - but that's on a different thread...
Always liked this idea, but it took me a while since you first suggested it to get my head round the concept, and I'm not sure most club sailors would get past "What on earth?"
------------- Firefly 2324, Puffin 229, Minisail 3446 Mirror 70686
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Posted By: Guests
Date Posted: 18 Apr 21 at 8:42am
It’s quite straight forward in practise. In addition to the PY each class has a second number, standard deviation, which represents the uncertainty in the PY number. As discussed ad nauseum that uncertainty arises due to low number of returns and the wind, tide and course on the day. The upshot is that no one knows for certain what the PY of the Finn should be relative that the Vareo. So with this method the race results get calculated across a range of PY for each class, and the end result is a likelihood of where you came.
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Posted By: Old bloke
Date Posted: 18 Apr 21 at 1:45pm
Looking at this on my phone, which is not ideal. Unless I am being v stupid. Can you post the results from the usual method to compare
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Posted By: Guests
Date Posted: 18 Apr 21 at 3:35pm
The corrected time and rank columns are the results using the usual method. The points column is the new bit, so the winning Finn scores 1.5 points because it didn’t win by much and might actually have been second. Similarly 7th, 8th and 9th are only separated by 17 seconds on traditional handicap, which is almost a dead heat given any uncertainty in the yardsticks to use, so score 7.7, 7.8 and 8.3 respectively.
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Posted By: Oli
Date Posted: 23 Apr 21 at 3:52pm
im sure someone will be along shortly to say using a decimal place is implying too higher level of accuracy Peaky and that we should just throw a stone in the water and see how many ripples it makes to determine py.
------------- https://skiff-media.teemill.com/" rel="nofollow - T-SHIRTS
https://www.photo4me.com/profile/23908/" rel="nofollow - PRINTS
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Posted By: JimC
Date Posted: 25 Apr 21 at 10:47am
This probabilistic PY proposal is really, I submit, about the scoring system rather than the handicaps. Whilst I'm not sure that the specifics of Peaky's system would be readily explained to the average competitor, I think there may be a case to consider radically different scoring systems for handicap racing on these general lines.
Essentially with handicap racing we are racing against the clock rather than against individual boats. At the moment if the first ten boats finish within 3 seconds on corrected time they might be scored say 2, 2, 2, 5.5, 5.5, 5.5, 5.5, 9, 9, 9. This isn't really an accurate representation of the actual performance, especially when one considers the likelihood of minor timing errors and rounding making the last second something of a lottery. A better representation of the race results might be scores like 5, 5, 5, 5.5, 5.5,5.5, 5.5, 6, 6, 6.
So I submit that there's an argument that points should be based on time rather than finishing order. What you don't want to do, however, in most cases, is to give points simply by corrected time, in which case a 45 minute race would give better or worse scores than a 60 minute one. So there's a need for some kind of calculation to normalise scores between different length races. Race management being the art of the possible, such a scoring method would be impractical for paper scoring, but perhaps its worth considering for these days with IT readily available.
There's one other issue though. Some years ago I dreamed up a new scoring system that I reckoned combined the best features of high point and low point scoring. I wrote a custom spreadsheet that did all the calcs, and got ready to present my idea to the club sailing committee. I then took some old series results, ran them through my sheet in order to be able to demonstrate exactly what difference it would make and why the revised results were superior. To my horror the revised series results were almost exactly the same, and it certainly wasn't possible to state that the few place changes that did happen were other than essentially random. My new scoring system died there!
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Posted By: Guests
Date Posted: 25 Apr 21 at 8:07pm
I think that’s what the probability based approach does in practise (score close finishes more closely) but that is more of a beneficial consequence than the main aim. Of course if Laser A finishes ahead of Laser B by just 1 second it has definitely won, there is no uncertainty there. But if Laser Abeats the OK by 1 sec that is near enough a tie so should be scored as such given we can’t be confident in the handicaps.
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Posted By: andy h
Date Posted: 26 Apr 21 at 8:19am
I feel for you Jim C. I spent a week of evenings on Excel post-processing some old race series at my club using Great Lakes, standard RYA and locally adjusted PYs. It made zero difference, bar so very minor anomalies in individual races for lower placings. Verdict: PY ranks skill and performance very well.
------------- Europe AUS53 & FF 3615
National 12 3344, Europe 397 and Mirror 53962 all gone with regret
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