By the way, Commander Pete, I used green lumber (a 1 X 6" as I recall) for mounting the pumb on the floor of the bilge, and it fits at the bottom very snugly. The electric bilge does not drain out the last little bit. But the Whale does.

Getting all the water out of the bilge is very important. You don't want the dirty bilge sloshing around the tops of the beer cans. Your friends might get ebola (by now, of course, the skipper who has had his beer sloshed for years, is likely immune).