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Other than stripping out the decking and replacing the foam nothing will COMPLETELY dry out an old Boston Whaler hull.

Since some water will remain in the hull no matter what you do short of the huge job mentioned why bother UNLESS you have so much water in your hull that it affects safety or performance.

I'm a pretty anal kind of guy and want everything in my life to be perfect but even I know when I'm spinning my wheels.

If you have a smallish amount of water in your hull it will not hurt a thing. Relax and enjoy your boat.