I like spar varnish, gives it a nice shine. Scratches come out with another application if you want. As far as the edge, I use a cloth rope a tad smaller than the thickness of the paddle, soak it in resin, and put it on the outside edge of the paddle. Then my fiberglass goes over that. Makes for a nice look and very sturdy. Last few paddles I found some black and white rope at Menards and it looks great!