Brett, I have my old Dacron main in the attic. It's 25 years old but hasn't been on the boat since 1997. It's actually in pretty good condition though probalby pretty blown out shape wise. You can borrow it for the season - no charge so long as you promise to give it back
I also have a 5 year old string main that you can borrow for bay week.
Let me know your thoughts
