How about pictures of your transom and working conditions. Are you indoors, on the hard, in a slip, on a trailer in your driveway? I don't see clamping as a big issue, but each condition may have its own solution. Extending the hull color over the sealed edges may work perfectly. Gorilla glue doesn't need a lot of pressure and it is easy to sand or cut off the extra. I've been contemplating just gluing a piece of veneer to Dragonfly's transom as another place to add more art to her. I do like the look of wood. However, there is also added upkeep.
-Will (Dragonfly)
-Will (Dragonfly)