They are mostly made for reaching which most windsurfers do most of the time, it`s only the race and Formula guys that actually try to go upwind.
I don't have time to investigate all the different types of wind surf rigs.
So who wants to take on this job and work-out a summary of what is often used/available on the (second hand) market in the way of Race and Formula sails. Also check what sail area's and luff lengths (+mast lengths) are used in 8-15 knots conditions. Boom lengths are important as well.
The F12 as it currently stands will be 120 kg (55 kg craft + 65 kg model sailor) and as such you also want to investigate the heavy boy surf sails (power).
Then get back to us and I will incorporate this windsurf sail option into the design.
If nobody takes this job on then I'm going to forget about it. Afterall I'm spending heaps of time on other aspects of the design already.
Wouter
Wouter Hijink Formula 16 NED 243 (one-off; homebuild) The Netherlands