My brother and I got a 16 ft 1961 fiberglass lakeboat. As you may guess it has rotten stringers. We're very new to this and have been briefed on the conventional repair of ripping everything up and doing new stringers and glass and such. We've decided this is too much work for us and are ready to pass the boat along. However, we heard a rumor that one could remove all of the rot, dry out the inner hull, and then fill the whole thing with expanding foam. This may be a recipe for disaster, or it could be credible. Either way, opinions are welcome before we get rid of the boat that we like.