RE: Earliest planing with 8.5 m2
just a note to cam vs. no cam. I actually gave a 7.5 no cam and a 7.5 3 cam free race sail. the no cam planes earlier.
I think it planes earlier because the sail is on a softer mast (25) compared to (29). It is easier to "flutter" the sail easing onto the plane. It seems that the cam sail has more "static" grunt but the no cam has more "dynamic" low end grunt.