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Re: Sizes of genoas
Locally the % is based on fortriangle area, no the LP! My max LP is 153, but I get 155% of my foretriangle area! So My sail maker made me an LP of 155, ended up with a code 6 jib, so got hit with a -3 rating! not what I really wanted frankly. But that is how it goes.
I would have to do some looking in the local rules myself, but a 155.1 to 160 or so would be a -3 hit, a sail larger than 160.1 would be a -6.........
Spin and main sail areas are equal, in that you get a certain size based on a given triangle. Spin is 160% of the J and I square measure, IIRC about 120% of the e and P triangle for the main, including the roach measure.
Locally if racing 1d, you need those sails, but if strickly phrf, you can have another set of sails that meets the phrf rules. So if 2d is a 110% jib, you can use a 155% if racing phrf rules. OR where the 1d requires say dacron sails, you can have string sails in a phrf race.
She drives me boat,
I drives me dinghy!