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Change the PY System?

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Poll Question: Would you like to see the Laser Fixed & Centred.
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31 [83.78%]
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423zero View Drop Down
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Post Options Post Options   Quote 423zero Quote  Post ReplyReply Direct Link To This Post Topic: Change the PY System?
    Posted: 26 Jul 17 at 7:02am
You would have to conduct testing in a indoor windsurfing arena.
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fab100 View Drop Down
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Post Options Post Options   Quote fab100 Quote  Post ReplyReply Direct Link To This Post Posted: 26 Jul 17 at 7:43am
Originally posted by iGRF

Originally posted by turnturtle


So Graeme:
On a scale of one to ten, one being a top flight contender in Garda on flying boats this week; 10 being your first few times in a dinghy, might sit on the side if their confidence is up to it; I'm guessing I'd rate about a 7. 
Which would mean you'd rate somewhere between 8 and 9  ... could your ego handle it???  LOL LOL LOL


No, well yes, I'd reason that when we first met in a single hander I'd have rated about 5 and am pleased that I've progressed to a 7, wouldn't quite put myself in 8-9 territory just yet, but it would be nice if there were a mechanism by which I could prove it, I might even take to travelling, entering events, participating beyond my comfort zone
Originally posted by turnturtle

[QUOTE=Rupert] Think the scale was the other way round...
 

Indeed it was

and there ladies and gentlemen, do we have the root cause of the PY bitching, a delusional, over-exaggerated rating of ability combined with a total ignorance about how talented and practiced circuit sailors are, never mind the top echelon.

The only cure, short of a Total Perspective Vortex, is to drop Graeme into a top spec Solo, Fireball, 14, Laser Radial for each of their Nationals, plus Salcombe Merlin Week. We'd spare you the humiliation of a Moth Worlds like at Garda currently. Applying TTs scale, iGRF implies he'd be twenties in a hundred boat fleet. TT suggests he'd be in twenties from the back. I know which way I'd bet.

So Graeme, that is your mechanism to prove it; not by the usual ad hominem attack of telling me you'll come to Frensham and beat me (unlikely but so what) but against the top sailors in the top classes in the heat of proper competition. Until that is done and you prove otherwise, I (and probably others) will continue to believe that over a season you get, on PY, about the results you deserve.

You might also then realise that any form of handicap racing cannot be taken too seriously and even that 'winning' without context is a false metric.



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Post Options Post Options   Quote Rupert Quote  Post ReplyReply Direct Link To This Post Posted: 26 Jul 17 at 7:44am
The 200 boat testing week wasn't meant to be serious, really, and I think you'd need more than that to get close to the accuracy of PY in most cases, as you would also need to change locations and ensure you sailed in all wind strengths, from force 0.1 to force 8.

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Post Options Post Options   Quote fab100 Quote  Post ReplyReply Direct Link To This Post Posted: 26 Jul 17 at 7:56am
Originally posted by 423zero

You would have to conduct testing in a indoor windsurfing arena.
and does that provide variable tides or confused waves, or a chop? Or disturbed air from trees, river banks, cliffs etc. Or even the sun in your eyes as you focus on the kite-luff.

The current PY system also, inherently, factors in that slower boats are often in the dirty-air and wash of faster boats. A 'pure' rating system will look at each boat in isolation. But handicap races are not time-trials, we are all out there together, giving and receiving confused wind and water.

Slower boats also suffer more in tide. 

Hence, notwithstanding all the other reasons it won't work, even a mythical perfect rating will mean that, with sailors putting in equal performances, the faster boat will always win.

And this is an improvement how? 

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Post Options Post Options   Quote Paramedic Quote  Post ReplyReply Direct Link To This Post Posted: 26 Jul 17 at 8:13am
Originally posted by RS400atC

Originally posted by Paramedic

I think the reason why the Laser has increased so sharply - having had a readily acknowledged to be lousy handicap for decades - is because there are so many of them out there sailing at all ability levels, all states of decay,  all types of water and in all weather conditions and the new PY calculation system takes that into account. If any class PY should be right its the Laser.

 With 200 thousand of the things around its a pretty good bet that we will all sail against a laser once a month if we do any form of handicap racing......


In point of fact, that is untrue.
I have sailed about 3 PY races with one or more Lasers in, in the last 5 years.

One club I raced at had a separate Laser start.
The others split 99% of their races into fast and slow or fast/medium/slow.


Theres always one exception  LOL

One of the clubs I sail at have a Laser start, but work out the "overalls" from the class results and use this to make a return so whilst you dont race against them you get rated against them.

I can only think of one club round here that hasn't got a laser in the dinghy park (South Staffs) so for the most part I stand by my remark :) 
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Post Options Post Options   Quote Guests Quote  Post ReplyReply Direct Link To This Post Posted: 26 Jul 17 at 8:29am
Originally posted by fab100

Originally posted by 423zero

You would have to conduct testing in a indoor windsurfing arena.
and does that provide variable tides or confused waves, or a chop? Or disturbed air from trees, river banks, cliffs etc. Or even the sun in your eyes as you focus on the kite-luff.

The current PY system also, inherently, factors in that slower boats are often in the dirty-air and wash of faster boats. A 'pure' rating system will look at each boat in isolation. But handicap races are not time-trials, we are all out there together, giving and receiving confused wind and water.

Slower boats also suffer more in tide. 

Hence, notwithstanding all the other reasons it won't work, even a mythical perfect rating will mean that, with sailors putting in equal performances, the faster boat will always win.

And this is an improvement how? 

That's missing the point somewhat. Those are all issues of a single number system, like we have now and like most people would want to keep even if that single number was produced in a different way.  
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Post Options Post Options   Quote RS400atC Quote  Post ReplyReply Direct Link To This Post Posted: 26 Jul 17 at 8:48am
Originally posted by Paramedic

Originally posted by RS400atC

Originally posted by Paramedic

I think the reason why the Laser has increased so sharply - having had a readily acknowledged to be lousy handicap for decades - is because there are so many of them out there sailing at all ability levels, all states of decay,  all types of water and in all weather conditions and the new PY calculation system takes that into account. If any class PY should be right its the Laser.

 With 200 thousand of the things around its a pretty good bet that we will all sail against a laser once a month if we do any form of handicap racing......


In point of fact, that is untrue.
I have sailed about 3 PY races with one or more Lasers in, in the last 5 years.

One club I raced at had a separate Laser start.
The others split 99% of their races into fast and slow or fast/medium/slow.


Theres always one exception  LOL

One of the clubs I sail at have a Laser start, but work out the "overalls" from the class results and use this to make a return so whilst you dont race against them you get rated against them.

I can only think of one club round here that hasn't got a laser in the dinghy park (South Staffs) so for the most part I stand by my remark :) 
You miss my point.
When I was looking around to move house, I looked at a lot of coastal clubs where I might race the 400.
All have their PY fleet split.
On the sea, it seems relatively rare for boats in the 900 to 1000 PY range to be racing against the 1100 to 1300 range.
Maybe it's different in Pondworld, but on the sea there seems to be little data being generated that actually compares the faster boats directly to the Laser or boats of similar speed.
I wonder how this affects the number crunching?
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Post Options Post Options   Quote Sam.Spoons Quote  Post ReplyReply Direct Link To This Post Posted: 26 Jul 17 at 9:56am
It would all come out in the wash if both fleets sailed the same course but, even at my inland club, they sometimes give the Assys a W/L course while everybody else sails round the cans.
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Post Options Post Options   Quote RS400atC Quote  Post ReplyReply Direct Link To This Post Posted: 26 Jul 17 at 10:34am
Originally posted by Sam.Spoons

It would all come out in the wash if both fleets sailed the same course but, even at my inland club, they sometimes give the Assys a W/L course while everybody else sails round the cans.

I've been thinking about the maths and I'm not sure.
It would be really interesting to be able to prcoess the national data for past years in various ways.
One way that springs to mind is to create a list of 'classes of interest' which would be the boats I race against plus others which are 'similar'.
Then discard all the races that don't contain at least two of those classes.
For some boats that don't fit comfortably into a category, maybe process the data in two categories.
For instance the RS200. Too slow to live in the fast fleet, too different from the Wayfarers etc.
I bet you'd get a different number if you looked at its performance against either the fast group or the medium group instead of munging the data together.

Personally I don't worry about the PY results, which suits a lot of people, but  I do see the argument that if you expect someone to shell out ten grand on a boat to race, some of them will want to take it seriously.
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Post Options Post Options   Quote jeffers Quote  Post ReplyReply Direct Link To This Post Posted: 26 Jul 17 at 10:52am
Originally posted by RS400atC

 
On the sea, it seems relatively rare for boats in the 900 to 1000 PY range to be racing against the 1100 to 1300 range.
Maybe it's different in Pondworld, but on the sea there seems to be little data being generated that actually compares the faster boats directly to the Laser or boats of similar speed.
I wonder how this affects the number crunching?

Certainly is. We split our Morning handicap race in to fast and slow. But then in the afternoons when the classes with fleet status get a class start all the PY boats are in 1 fleet. PYs ranging from 950 or so through to 1655 (Optimist). The Optimists usually do pretty well....
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