I agree if the deck is solid drill 2" holes. I wonder if you shrink wrap the boat and put a dehumidifier on the boat and let it run for a couple weeks will it dry out the stringer?

the floor is solid and thats why i didnt want to tear it out. i'm at work today and tomorrow i will drill a few more holes on the sides of the strungers and see what i find. its pretty warm down hear today so hopefully that will be enough to dry it out.

I'm pretty convinced that this is a common older SeaCraft issue and even more common with inboards with leaky shaft seals and such. You got to realize that back in the 70's drip less shaft seals were not around yet. My boat is a 76 23' inboard and the previous owner kept it in the water at a slip. I noticed the boat was sitting low in the water and bought it any how. Well my boat was wet, soaked in fact. I ran it this way last season and had to keep the scupper drains plugged all the time because they let more water in then out. I keep my boat on a trailer and I believe it dried out quite a lot over the winter. I splashed my boat on Saturday for the first time since last season with full tanks and it was sitting an 1" higher than last season. I was able to finally run the boat without the drain plugs in and the scuppers finally drain water!