Example : Taipan 4.9 luff is 8,02 and mainsail including mast is 14,58 now when the mast is increased to allow for a 8,5 luff length the max allowed mainsail is decreased from 14,58 to 14,1 sq. mtr. or 0,48 sq.mtr . less.
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<br>THe point you make about high and low aspect sail is that under the assumption that both sail areas are equal, becuase than I totally agree with you than even higher aspect sails are to be preferred in nearly all instances. But the rated mainsail area formula was proposed to counteract this without actually limitting boat parameters. The limitation is intended to be optimal performance itself. When you go to low aspect because you want a big sailarea than you'll loose out unacceptally in one set of conditions and when you go to high aspect and accept a small sailarea than you'll loose out in another set of conditions. This will make development self limiting without making the rules too strict. Do you think, with your experience<br><br>