As Zamboni stated you can fix the boat from the outside using "Blind Rivets" (similar to Pop rivets but the stem gets locked in the rivet with a mechanical lock, these are structural fasterers) and can be installed with a regular Pop rivet gun(may cause damage to the gun with prolong use but is ok for a few) I would also suggest installing them with a high quality non silicone sealent. They run about a $1 a peice. If you decide to buy the boat and want to go this route PM me and I can give you a contact for these fasteners.