I bought 3 rolls of Rescue Tape at a boat festival today (attendees got the 3rd roll for the regular price of 2, plus the vendor paid the sales tax).
There's an automotive application I already had in mind for it, and a little thought could come up with all kinds of other uses, including paddling-related ones. Check it out. No more sticky residue from duct tape, and it is waterproof. It makes a permanent seal to itself, so if/when you want to remove it you just cut it away (no glue left to remove).