Re: transom ...
Duckee:
I just put our boat into the water after doing a similar job this spring. It is a 73 Glasspar Citation. There was no wood left, just what looked like leaf mulch. What I did was use a Rotozip tool with a diamond abrasive bit and cut the top off of the transom, then dug out the residue and vacuumed it up. I cut a cardboard template of the transom, and cut plywood to fit. Since the opening was smaller than the width of the transom, I had to cut the pieces (I used two sheets to give the proper thickness) at a diagonal to allow it to slide in. I used plenty of epoxy resin. The outer skin had actually taken a set with a curvature due to nothing being inside the shell, so when I got everything together I used stainless steel deck screws to attach a sheet of plywood to the outside to straighten it, which was later removed. The shell had some fracturing so I layered fiberglass cloth on the outside, and used a 1/8" sheet of aluminum when I mounted the motor. With all the epoxy resin, I wouldn't be surprised if it was stronger than when it was new.
Check the Fiberglassics website, and also "The Rot Doctor" for other examples of how to do a job like this. It is a messy job, for sure.
