Unfortunately it might be more than defoaming time. What I found with mine is the foam trapped moisture, then than plywood floorboards were wicking it up from the foam, which adds more weight, and rot. And if let go far enough means new flooring. In my case, because I've caught it early I can avoid future problems by ensuring it gets dried out after using it. For example, don't store it where the rear deck gets rained on, and if tarped to keep rain out, don't tarp so tight that it traps the moisture from your last fishing trip in.