Wouter…to take what Mark MT has brought up a step farther…. If you are working towards a one design 12 foot catamaran than why lay claim to the F12 name? It makes no sense for you to call your one design a Formula 12 (which by your own definition it is not) unless your intent is to block anyone from forming a true F12 class which would be in direct competition with your 12 foot one design.

Regards,
Bob