I have an old Hobie that was originally red and the previous owners had painted it blue. I patched and faired the hulls out with West system epoxy and fillers, then painted with Petit Easy Poxy. (It's not really an epoxy, it's a high grade polyurethane.) I used their primer first and then two coats of Bikini Blue. I used a foam roller (do a small area, maybe 2' x 3') followed by a wet brush to knock down the bubbles. It came out really well.