[WillyC]

dcobbett,
I have the same boat as you, 1976 20' sf. Well the title says so but the hull numbers are puzzling. Anyway, I just pulled out my tank this weekend and didn't find any plywood base. Just a bare fiberglass compartment. I'm not sure if this was the original setup because the tank was not foamed in. Up in front of the tank it's completely foamed in. Behind the tank is the same except for two tunnels (for running cables ect.) adjacent to the fiberglass stringers. I'm just curious if your boat looks the same. Thanks -will