How can I tell if my transom is rotted to the point where it is unsafe? I have an I/O, and I have very little flex when I push down on outdrive. I noticed the floor in the back of boat is soft. Also my right bottom bolt that bolts the outdrive on the boat has broken off. I now have a little water intrusion in bilge because of this. My question is can I just seal the outdrive with some 5200, and fix in winter. The water intrusion is very little if any at all, but I don't want to drop my outdrive in the middle of the lake. But I don't know how to tell how bad the rot is.