Hi Colin
Down the pan ,--out past the layline ,-Its not just you ,thats usually something reserved for matchracing or collegiate team racing or large class racing at top levels ,-not for local club rated racing ---You generally don,t see it on cats because speed is more the objective . Cats are also very vunerable tacking and in roundings ,the speeds change from 20 plus to 2 sometimes in seas which causes more potential fouling situations and potential boat damage ,-most learn quickly this does not win races or regattas and usually involves the disgruntled back of the pack type cat sailor.
-- ,just realized I tryed something similar once racing way back when on very large competitive fleets of H-18s .
It came down to the last race and they had to have a first to win the regatta so we sat on them off the start and tacked on em each time up the first beat ,after 6 or 8 tacks we both rounded the first A mark close to last in class. Remember I handed the tiller to the crew {age 12 } and said that should do it, you sail the rest. --
The other team was so good they sailed through the entire fleet in the 3 around course and just missed winning by a boat length ,-oddly enough to my crews parents , I ,ve never cheered so hard for another boat to keep going before .
Good lesson for me ,I,ve never done it again or would ,better just to race and loosely cover if you have to in class . In rated racing on a faster design thats really a harsh tactic, if I were the Dart I,ve give them more than stick .
If your racing in a rated class with larger faster boats the larger lighter beamier one always has the advantage in tactical situations ,{maybe why so many of those types like rated races}
-its not really {fair } or sporting in rating class type racing .
Seems like the ISAF Rating for cats and Texel are very similar producing similar numbers , think ISAF uses a few more factors in ratings calc that vary of waterline length ,
board measurement ,and spin area measurement where Texel does not and uses a standard 4 pt for all spin in size category and a 3 pt -for non board types. It then uses a slicker abbreviated simpler math formula of rated Length ,Sailarea,and R-weight.
TR number = 100 / (0.99 * RL^0.3 * RSA^0.4 / RW^0.3),
The ISAF site has a really good example rating diagram and sample calc .http://www.schrs.com/schrsdiagrams.asp?id=boat
Sailwave is an invaluable tool for any that would like to compare rating systems,we should be comparing them and hopefully someday combine the best attributes of each into one universal rating system .
I gave it a try in outline,under TIP rating on the F-20 forum here , TIP for Texel ISAF &Portmouth combined ,but honestly it will take better minds than mine to work out all the variables correctly .
The Texel or ISAF Rating systems seem to be accurate within 2or3% -and doubt the differences in P-rating when converted and compared would be much different . What your left perfecting is that last few percent by adding a windspeed and other added calc based on design effects.
Adapting the ISAF rating for cats that sailwave scoring is of course set up for also for some events here would be a first good step.
All the best
Carl
