Guys, My standard interior finish has been BLO/shellac. I'm finishing up a cane with a barley twist. I'd expect a cane to experience more abuse and possible moisture. I just put a coat of BLO on the piece and was looking for suggestions for a topcoat. Is poly my best option or will spar varnish be tough enough? Due to the twist, I would prefer to spray the final coat on. Thanks in advance.