Re: Aluminum bottom paint?
Sadly for aluminum boaters (but apparently happily for sea creatures) the great tin-based paints we used to have for alloy boats are no longer available. There is a way you can use copper paints but it involves stripping to bare metal, applying an epoxy barrier coat then a galvanic isolation coat then your bottom paint. You might check out E-Paints, I understand they have a product for aluminum that is working pretty well.