RE: Minimum sail size for Formula Exp 160
Hey, then dont worry...a 10.0 or 11.0 would be good choices, if you have used some 8.5 sails, you will feel the jump, but its nothing complicated to get used to it.
Well, if you want to start racing...then 11.0 can be a better choice. If you still look racing as something really recreational and you will be mostly playing around...10.0 its perfect.
Overdrives are really good sails for this purpose, and are designed around the Formula Experience boards.