thanks for the info on the sails, I'll look into them
rgugli offers good advice, but what's missing is your skill level and experience. It's difficult to offer advice without this information.
I am a recreational sailor (23 years), but I have sailed and raced formula boards for 6 years. Sail size depends on board type, sailor weight, wind speed, water conditions, sailor experience, racing or recreational use & budget ($).
Provide some of the above information and we can offer better advice.
OK, let's see:
level of experience, I'm happy sailing with cambers up to 8-8.5, but that's my limit, never tried anything bigger
most of the time I use something up to 7.0
it's for recreational use, but thinking that if I like it and I'm not too bad, I'd try to race
budget, I'm not rich, but I don't mind spending some money, I'd be looking at buying a single sail to start with
board type, as I said, I'm thinking on the Starboard Formula Exp
wind speed, mostly Force 3, once I can handle that then I'd go out with Force 4, anything stronget, for the moment I'd just go with "normal" boards, the water is a bit chopy (Med)
what sails from Severne and North would be suitable for this?