-Thanks again John , appreciate the racing experiences and rating info .
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<br> your correct on basing sail area to weight on the I-20 or even new Tornado w spin ,-
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<br> We need a simple proven relationship formula of sail area to weight , in the 20 ft L -8,5 BEAM CAT CATAGORY , -
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<br> What would be an accurate fair scale of sail area ,-main jib and spin progressively to boat weight , --
<br> All I have are older reference books like {Elements of Yacht Design } that may be dated and refer mainly to monos ,
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<br> -Can you propose one , or a basic sail area to boat weight formula we can apply based on current cat data.
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<br> Understand righting moment and other factors in the total , but we can address these with crew weight seperately .
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<br>-greatly appreciated -
<br> Carl
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