My 2005 nacra F18 sails are just starting to show some wear
Looking at either new or excellent used set
Will a fully batten jig increase performance I am only a weekend recreational sailor
Yes a fully battened jib will increase your performance but since you're a recreational sailor you probably won't notice or even care. You'll also give up or ability to furl the jib and being able to furl the jib while you hang out with your friends on a sandbar is a nice plus.