You migh try a good enamel. Believe it or not, Rustoleum (or Rustmate) goes on well if you use primer, and two coats can be really tough after abou a week to dry. You probably would want to thin it with a little paint thinner, and use a short nap (or foam) roller to apply.

> For paint, I passed on the marine paint. Expensive, and my kayak
> isn't sitting in the water for months on end. I used Bear's acrylic
> latex paint. Which normally wears rather well. Except on non-primered
> and apparently still blushing epoxy.