I refinished a 91/30 MN with West System.
They make a special clear hardener that is UV resistant (I think it's 209) for this purpose; the 205/206 hardeners are amber colored, and offer no UV protection for the epoxy. Many people don't know that most epoxy coatings need a UV resistant coating over it (like varnish or polyurethane) for protection.
The problem is the viscosity, and like Scorch said, it's labor intensive. It doesn't flow like one would want and gives a "lumpy" finish that needs sanding after every coat.
Came out nice, I'll see if I can get a pic over the weekend and update...