I do not know how long is your boat?
At this stage there is not much that can be said. You do not know the
condition of the wood under the polyester or epoxy resin fibreglass.
You can try to strip away the peelings at the transom and find out the
humidity of the wood. The other step is to take If the wood is dry you can
repair it. If the wood is wet and dowdy you will have to remove the
fibreglass, the rot and let the wood air dry before doing any repair.
Further testing can done with a humidity tester and core sampling. Once you
are dealing with dry sound wood repairing the fibreglass covering is not a
problem. The resin of choice is epoxy, not to say that polyester can not
do a fair job on a small boat.

"mako2006" wrote in message
ups.com...
I have a 1959 Helton wooden boat. The previous owner fiberglassed below
the water line. This is now starting to peel away at the transom ,
which is where the fiberglass stops. Any tips on repairing this ?