[quote=tominpa]You can put water in the hulls to see if it leaks through. Normally we test for water-fastness and leaks by slightly pressurizing the hulls with a few pounds of air pressure, then testing the outside with a soap solution. With the decks off, that won't work. I would recommend using a gel-coat on the bottom that reasonably matches the hull color. Even after sanding and polishing, this will create an opaque coating that will block the light that bothers you, seal any areas that are permeable due to loss of the original gel coat, and add a wear layer. The best thing you can do to maintain that bottom treatment is beach wheels.[/quote]
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