Is there any fixing Transon rot? My father-in-law has a 15ft. fiberglass boat, it think it a late '50s Cobia or something like that, the floor is spongy and the transom has the gel coat all cracked and there is a crack going all the way from the port side to the starboard side on the transom. I scares me! He's running a '77 55hp Evinrude. <br /><br />I also have a Glasstron in the same shape, are these boat ready for the boneyard?