So I was preparing to pull my engine today to start the rebuild. (I know wrong time of year to do this!!) When I pulled the through hull exhaust tips off I discovered that the transom is rotted pretty bad. When I pushed on the outside I can feel where it is spongy... So my motor project has now turned into needing to replace the wood in the transom. I have searched the forum and found some info on this. Does everyone still agree that using a circular saw with the blade depth set at the wood thickness is the way to go about cutting out the inner transom? What should I use to replace the rotten wood Marine grade plywood or something else?? I will try to get in touch with one of the local boat builders to see if he can install the new transom. I think that is way out of my novice fiberglass league. Anything else I should be looking for or should do???