could you give me a couple of tips for glassing a single fin on a board

look up a thread called “How to glass on fins properly”  pay attention to Deadshapers post about glassing on fins.  if the fin is wood make sure you seal it with laminating resin before putting any glass on it.  paint a thin coat of lam resin on wood fins, let that kick, repeat, then you can laminate glass to the fins.  UV poly resin works great for sealing fins and glassing them on.