[Ryank]

I feel ypur pain having had several boats that needed transoms over the years. I had a 20 seafari that had a bad transom and some very noticeable flex. I can tell you I had a T top place in Tarpon Springs custom make an aluminum plate on the back of the tansom and and a smaller plate inside, this stopped all flex and I used the boat for several years of hard use before selling to someone who wanted to restore her. He ended up leaving the transom alone last I heard. While this is by no means a replacement for redoing the transom properly , it could help if $ is tight for the time being depending on how bad yours is.