water trapped in hull - any suggestiions?

I would get a marine survey done on it first. They can check moisture levels and pinpoint a wet spot. Sea Ray are not known to delaminate. Check for blisters in gel coat. If you have a lot of blisters, bubbles in gel coat boat is garbage. As for what everyone else is saying wet floatation typically takes a couple dry docked years to correct. Separating hull from top deck is the only way into it and I believe your boat is double hulled with floatation in between.

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Originally Posted by Pat32rf

I have seen boats where they have cut out the old floor, cleaned out the old foam and had new sprayed in. A fresh piece of plywood and a coat of Fiberglass to seal it solves the problem for another thirty years.....

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I did this years ago and will never own another fiberglass boat for that reason. My aluminum Princecraft, just find the screws and remove floor pieces.

I find that Fiberglass boats get wet inside when it rains, aluminium boats get wet when they are in the water....maybe bigger ones are different but that's what I find with anything under 16'.