Hi Floyd, I've done similar statistics on my sails collection, basically calculating the ratio between claimed surface and inner triangle area. Overall I've found numbers around 1.4 with wave sails having (logically) a smaller ratio than freeride/race sails. But also it can vary sensibly from one brand to another, one model to another, and even one year to another. Sail surface seems to be affected by same marketing tricks than board volume.
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