02-16-2003, 09:56 PM
Rattleguard makes a spray in bed liner (similar to Rhino liners) that they recomend for the bottom of boats. It adheres well to clean and painted aluminum. If you have worked with spray in bed linings you know how well that stuff sticks. It is an epoxy/eurethane based material. You will have to search for their site, I don't have a link right off hand. But a coat of that up to water level may provide a long lasting seal for your boat.
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