I have a Mariner 36 cruiser and consider myself a very good sailor and master craftsman in cabinets, construction and boat work. I have what someone will undoubtedly think is a stupid idea (and perhaps for good reason???). I've done a lot of plumbing, commercial and residential and had occaision to use PVC,cpvc,copper,cast iron etc., however, I've never seen 'hard' plastic plumbing on a boat. I've only seen hoses which taste bad, collaps etc.. My question is: Why not use PVC or cpvc plumbing on a boat??? (well strapped of course) It would elliminate a lot of inherant problems on a boat. I wouldn't use it on thrugh-hull plumbing for obvious reasons, however, for fresh water, why not? And waste? Too much vibration? Won't make it in the long run? Thanx in advance (not too smart to ask) Jake