While moving some things around in my 1967 15' Wellcraft to prepare/clean for the upcoming season I went down to a knee to pick something up off the deck. When I did this I heard a cracking sound and felt the floor give under my knee. While at first I thought it may have been a knee giving out on me (too many miles running; too many jumps from perfectly good airplane) I was relieved to know my knee is still intact, but the boat floor...not so much. Upon further inspection I discovered that my floor was "soft" in multiple locations, the worst of which was under the right (Captain's) side. As I took the seats out and did some further, more in depth digging I discovered that the floor is rotten in multiple locations throughout. As you can see in the pictures I've cut out a hole in what I consider to be the worst area (under right seat) in order to get a better look/understanding what I'm dealing with. Looking at different blogs and articles, and speaking with different people here and there, I feel pretty confident that while my stringers are still in good shape, my floor will definitely have to be replaced. This is where I am right now; trying to decide/understand what type wood/material to use for the replacement floor. Keeping in mind this is a 1967 model boat and I am almost certain the floor is original and has/had lasted for over 40 years, I feel confident that a good/great grade of wood with proper installation technique will be sufficient for me to get another X# years out of her. I'm looking for suggestions on wood type, thickness, treatment, etc, as well as fiberglass overlay requirements/necessity in this type appplication. I appreciate any suggestions regarding this.
