Sealing 3" hole in PSC deck near mast
As it's quite chili up here in the Great Lakes in the Spring / Fall, I've picked up a Dickinson propane cabin heater. I'll be installing it on the port side bulkhead of a PSC '34, hear the mast. The installation calls for cutting a 3" hole through the deck for the air intake / exhaust pipe.
How should I deal with sealing the deck for a hole this large, with an epoxy plug similar to what would be done for bolt holes, or is there is a better approach? Should I drill a slightly larger hole (maybe 3.25"), epoxy, then drill the 3" hole in the epoxy?
Any other lessons learned from those who've installed a cabin propane heater?