I live in southern pennsylvania, and am hoping to buy all my supplies from Lowes or home depot. As I stated before, I like the convenience of running out to a local store to restock whatever I need. I am planning to start with a plywood boat. I have decided to give bc yellow pine plywood a try, but think I probably need a real good sealer to be safe. In your opinion, i take it, polyester resin is a bad sealer and i should use linseed oil?