A right to protest (PY Content avoid if bored)

The list of base numbers looks awfully like the Irish ECHO numbers used to when they were pretty obviously base off IRC, or at least a simplified form of IRC.  In many instances they are too close to IRC for its to be a coincidence IMHO.

Staying slightly off topic... It wouldn't happen of course, but how about this idea to level the playing field if Clubs are reluctant to bring in local PYs. PYs are the average of all returns submitted by a variety of clubs and classes. It would be interesting to know which clubs' returns come out as closest to the set PY across the majority of their classes, and then to analyse the sort of racing they do. In theory it might enable some other clubs to adjust whatever variables are available to them, e.g. leg length, wind angle (Assys) - which clearly affects handicapping - to conform with what the "average" Clubs are doing so that handicap racing is theoretically closer.   Would not work for tidal clubs of course...

Originally posted by turnturtle So this is a formula based system based on boat variable right Chris, not based on CSF?

Absolutely not. AIUI NHC is inspired by the Echo system in Ireland. It takes minimal input from boat data. Its almost completely based on previous performance of the boat/crew, so a complete antithesis to GRFs concept.

The base number is a very broad brush starting point and each boat will rapidly move from the base number, and two identical boats (in the event of there being any!) can and usually will have different handicaps.

The reason for it is that the decline in PYS returns for cruisers made the PYS class based system unsustainable, and a measurement based system is impractical unless you move to much higher cost system like IRC, so something was needed as an alternative to IRC for entry level racing. Looking round the world the individual personal handicap without measurement came out as the most popular option.

Originally posted by tickel "Is there anything Jim has not statisticianisised?"

Millions of things. But what 'everyone knows' is unreliable. Only numbers can tell you what's really happening, and only then if you can avoid the trap of making the numbers support your personal bias. So if I'm interested in something, or if I need to know, I *try* and look at the numbers with an open mind.

Edited by JimC - 16 Apr 15 at 9:57am

Originally posted by turnturtle http://www.rya.org.uk/racing/Pages/NHC.aspx So this is a formula based system based on boat variable right Chris, not based on CSF?  So theoretical exactly what Grumpf is after?   Interesting to see what differences it makes to individual race results.... are you publicly publishing them?

Edited by chrisg - 16 Apr 15 at 9:55am

More lambs this morning but only white ones. I shall drive down the lane shortly and pause by a water trough where gangs of the little buggers gambol around the bushes. In the background will be the lake where last night I beat the former boy in a pursuit race on personal handicap. This is my 23rd spring living here and I never tire of it.

PY and complaining, is that this topic?

I think we should start a new topic, "Is there anything Jim has not statisticianisised?"