Flex Seal Aluminum Boat Leak Repair-As Seen on TV

This "As seen on tv!" Flex Seal did the trick. I've used it for a lot of different applications and it's an overall useful product. I've used it for plugging holes where ants are coming in, used it for various adhesive applications, and of course this old leaky Jon boat. It's important to apply to a clean surface for best results. Make sure you have adequate ventilation when you are applying this stuff. Many times it will take multiple coats to do the trick. I would say that this is great for an overall short term fix for many things and not necessarily a permanent fix.
Warning: This will not work if you slice your boat in half and try to glue it back together.