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Sailjuice Global Warm up handicaps

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OultonBen View Drop Down
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Post Options Post Options   Quote OultonBen Quote  Post ReplyReply Direct Link To This Post Topic: Sailjuice Global Warm up handicaps
    Posted: 28 Nov 11 at 7:13pm
Originally posted by jeffers

..... What I think he is getting at is that some classes flatter peoples sailing .... nowhere....
AngrySo what have you got against Phantom sailors ? Shocked
......... 
Oh sorry, now I've read it a second time, ProperLy ! ....  Embarrassed


LOL LOL


Edited by OultonBen - 28 Nov 11 at 7:15pm
No-one can squeeze past ..... when you're as "Chunky" as myself !
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Post Options Post Options   Quote macgrego Quote  Post ReplyReply Direct Link To This Post Posted: 28 Nov 11 at 7:14pm

The Laser handicap needed something doing to it to try to attract Laser sailors to handicap events like this. In the past at the GGP we have seen a very poor turnout of Lasers. It is very hard to do well in a Laser under the RYA handicap. Hopefully this will get a few more coming along.

It's not just the Lasers who have benefitted. I will certainly be going along to a few of the events in my Laser 2000. Hopefully we'll get a good blow!
 
James.
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Post Options Post Options   Quote Paramedic Quote  Post ReplyReply Direct Link To This Post Posted: 28 Nov 11 at 7:57pm
Originally posted by macgrego

The Laser handicap needed something doing to it to try to attract Laser sailors to handicap events like this. In the past at the GGP we have seen a very poor turnout of Lasers. James.

 
but is that because of the handicap, or because you could sit on a chair and have two blokes throw ice cold buckets of water over you very 5 seconds or so and have the same amount of fun?
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Post Options Post Options   Quote Guests Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 11 at 12:14am
I've been thinking about this. These classes can't be getting slower? If it is other classes getting faster, then those handicaps should have dropped rather than the Laser, Enterprise and Streaker rising. But XD kits, dozens of Speed sail iterations and Roosterisation can't have slowed them down, surely? I don't doubt that the Sailjuice numbers are an accurate reflection of the data, so what is the explanation? Have the yardsticks of these very common boats been wrong for 30 years?
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Post Options Post Options   Quote jeffers Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 11 at 9:18am
Originally posted by Peaky

I've been thinking about this. These classes can't be getting slower? If it is other classes getting faster, then those handicaps should have dropped rather than the Laser, Enterprise and Streaker rising. But XD kits, dozens of Speed sail iterations and Roosterisation can't have slowed them down, surely? I don't doubt that the Sailjuice numbers are an accurate reflection of the data, so what is the explanation? Have the yardsticks of these very common boats been wrong for 30 years?
 
I would guess it is easier for them to adjust 2 or 3 classes than adjust pretty much every other class....
 
Either way the events will be fantastic, I rarely hear too much about event winners from people who travel but I do always hear about the great race they had against someone else from another club in the same class....followed by the chat in the bar/social events afterwards.
 
Only rarely do you get a lot of chat about the winners....and usually for the wrong reasons!
 
Plus (and we have a thead of this) XD kits on Lasers have not made them faster just made them easier to sail (and easier to pull too much on of each control).
Paul
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Post Options Post Options   Quote jeffers Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 11 at 9:19am
Originally posted by OultonBen

Originally posted by jeffers

..... What I think he is getting at is that some classes flatter peoples sailing .... nowhere....
AngrySo what have you got against Phantom sailors ? Shocked
......... 
Oh sorry, now I've read it a second time, ProperLy ! ....  Embarrassed


LOL LOL
 
You been to Hunts then Ben....... Wink
Paul
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Post Options Post Options   Quote OultonBen Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 11 at 9:37am
Handicapping is a RELATIVE thing, not Absolute; hence, moving-up/down at one end achieves exactly the same as moving-down/up at the other. The trick is to get the Amount of movement just right (in %-terms to achieve the same effect any move towards-zero could be achieved elsewhere by a larger move away-from-zero).

Poor old Laser, stuck in 1970's technology with its established PY, while new classes appear in 21st-Century or rather introduce high-tech advances. We need to look at how many old, stuck classes exist, compared to new ones and wag the shorter (easier-) tail.
Totally agree with Jeffers, quote ".... adjust 2 or 3 classes than adjust pretty much every other .... ".


[Yep Jeffers Smile; shame about no 2012 Phant-Open; Hunts = Nice, Friendly, Accessible place (though sequential marks rather than spatial are a real mystery Confused)
Wink

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Post Options Post Options   Quote winging it Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 11 at 10:00am
the class has collapsed at Hunts Ben - a few key figures either sold their boats or left, and they no longer have or want fleet status.  A shame.

The cvrda open, on the other hand, will be going ahead, probably stronger than ever.  I think more people are giving up on the possibility of buying new boats and instead taking up the challenge of restoring older, possibly more interesting classes. 
the same, but different...

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Post Options Post Options   Quote Sprint Bob Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 11 at 11:33am
Originally posted by Peaky

I've been thinking about this. These classes can't be getting slower? If it is other classes getting faster, then those handicaps should have dropped rather than the Laser, Enterprise and Streaker rising. But XD kits, dozens of Speed sail iterations and Roosterisation can't have slowed them down, surely? I don't doubt that the Sailjuice numbers are an accurate reflection of the data, so what is the explanation? Have the yardsticks of these very common boats been wrong for 30 years?
Hi
It is unclear to me how the Laser got so far out of step originally but it has been the case for a long time. Once a boat got an RYA PY (especially a Primary PN) it became a sort of self fullfilling prophesy. In the past most clubs have been in the habit of using the RYA numbers because it is the politically easy route withinin the sailing committees keen to show no bias to one fleet or another. So most clubs returns were the existing RYA numbers. Further more until recently returns that showed extreme changes were often discounted as outliers - so the few clubs that were trying to correct the PYs were ignored. (A number of the current SJ adjustments would doubtlessly have been treated thus in the past)
Over the last few years the RYA have been trying to correct the issue by the following changes:
1) they now take more than 60% of the club returns by Sailwave data direct from the clubs so can analyze the race data for themselves.
2) they encourage Clubs to adjust their own handicaps to suit the local conditions / fleets. They provide the spreadsheet and the explanation on how to do this. They also say that they no longer discard extreme returns as outliers.
But we must remember that the RYA PNs are the result of the averaging over a huge number of Clubs, locations, sailors, tidal, non-tidal etc so this slows down the rate of change and also increases the spread of the data.
Additionally  I have heard it reported that the RYA apply an attenuating factor - particularly to primary yardsticks to reduce the rate of change. I believe that this is something like dividing the calculated change by 16 for a primary yardstick. So if the analysis for one years return suggest a change of 32 for a primary yardstick the actual correction applied in the next year is 2.
So you can see why it is a slow process.
In the current round of changes being applied in the Sailjuice Winter Series the exercise has:
1) Attempted to go straight to what is perceived to be the proper handicaps in one step without any attenuation.
2) Only considered the data from large inland waters and hence eliminated the effects of sailing  in tidal conditions, or on narrow rivers or small ponds. This narrows the data spread and makes the handicaps more applicable to the waters where they are being used.
Let's see how it works out................... 
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Post Options Post Options   Quote andy101 Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 11 at 9:11pm
We could save everyone some time at this busy time of year & cut & paste the whole of a thread on the  subject of the laser handicap from the previous year when we know come March it will merely move up by a couple of points. If any laser sailor lost out in a handicap race by 2.5 seconds last season then they can look forward to this season otherwise it is a waste of time in the majority of clubs. 

At least if Sprint Bob is correct regarding the attenuating factor  we know where it is going but by the time it makes much of a difference I will be to old even for a Solo! 
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