David-- I live on my boat and there are some amazing marine products that
will solve for ever your stripped screw holes:

If you have access to West Marine or a similar chandlery-- you will find
West (not related to West Marine itself) Systems Epoxy Resin and Hardener.
The instructions for mixing a small quantity of Resin and Hardener is
straight forward-- but once applied to the stripped out holes (i.e: fill 'em
up completely with the epoxy mixture) and cured-- you can drill out the hole
in a slightly smaller diameter than the screw and voila: you have some very
good threads to grip.

No doubt there are several ways to skin that cat, but this one pops to mind
first.