Rick Harper has a full batten jib for his boat (Glaser sails?). You'd have to ask him though as far as performance/etc...
On the Nacra 20, I think the full-battened jib is better in heavier winds, and the partially battened jib is better in lighter winds. The full battened jib seems to be very flat up top. This is a Nacra 20 though, not and F18, so I'll be quiet now.
Why do you feel the fully battened jib works better in higher winds? Is it because it won't flog? Does it open/close the slot better?
How about reaching with the spin up? Can you get the right shape?
