I use a product called Honey Teak on all my exterior wood. It is an acrylic urethane enamel. After stripping the wood I can apply 10 to 12 coats of Honey Teak in one day and it last about 9 years. Tom Fabula with Signature Paints told me that if I scuffed up the surface and applied 2 coats of clear enamel every 2 to 4 years depending on where the boat was that it would last much longer. The new ports from New Found Metals look really good after coating the cabin sides.