Main Sail Area
I recently purchased a Doyle Main sail for my H23. I=26.00, J=8.50, P=25.67, E= 9.75 The sail area for the main is 146 square feet. The sail has "moderate girth". The good part is that it does not contact the "back stay" when tacking. I have a somewhat larger main, that often runs afoul of the back stay when tacking, especially in light air. Just if you want to know about the Genny, according to Doyle, the sail area for a 135% Genny is 134 square feet. Hope this helps.Bill Leathen