John,

from the pictures that sail dont look like it would measure in under F16 rules, not enough shoulder. If you carried it to open regattas, you would have to compete on handicap I think. Perhaps not a big problem in Switzerland (yet, but one day <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" /> )

I would like to have such a sail myself, but it would spoil me if a class regatta was held in low winds <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" />