I bought a used CC skiff and have discovered some areas of softness on the fiberglass-over-plywood floor. My friend tells me its probably due to failure to properly bed the console, seat, and deck plate screws with a bedding compound. My questions are 1)what is a good compound to use, and 2)when attaching a piece of hardware such as a cleat, is the compound to be used only around the screw holes, or between the cleat's bottom and the deck? At this time, I don't want to cut out the floor. The soft areas are limited to a couple spots. Any advice will be appreciated.