I've got a 94 190tf that I bought new, been a good boat for almost 20 yrs but I got to noticing the transom was flexing a good bit so after some internet research it seems about half of it is rotten I think its been leaking from the tie down loop, sounds hollow when tapping from the outside and feels spongy from the inside. I'm thinking about trying seacast to fix it? I'm looking at buying a new boat in a year or so and don't want to dump a bunch of money in this one thanks for any advice.