Re: Fiberglass boats
No they don't all leak and the ones that do, normally leak around fittings, outdrives and drain plugs. As far as gel coat and fiberglass not being water proof, well nothing is really waterproof, some things are more water resistant than others, but water will permeate almost everthing. For the most part, you can call a fiberglass boat, chemical tank or other item waterproof, not enough water (or other substance) can migrate through it to be meaningful and whatever did would not be visible. Fiberglass will absorb water over time and it can wick down the fibers, but not to the point of having visible water in the hull. Plastic gas tanks are considered water proof (fuel proof), but chemicals in the fuel can pass through the plastic and be lost in the air.
