I think I am not going to modify my 5.8 to the NA version but insteead will take the recomendations by Johnes and Lee Wicklund and spend the resources I have on a good spinnaker setup.

I am now shopping for a new (or practically new) Jib and Mainsail for my 5.8. I dont know much about sails so any assistance would be appreciated.

Another question.
Mylar, Dacron, Pentex, square top etc...What does all this mean?

I am located in San Antonio Texas. Its a decent location with 3-4 lakes in a 60 mile radius and the ocean's about 2 hours away.