Shower on board
I really like the pleasure of a good shower. Our shower drains into the bilge and gets pumped out from there with the bilge pump. After a shower we wipe down all the walls and fixtures in the head thus sanitizing the same, then we use the bilge pump override switch to run the pump until it drains almost every last drop out of the bilge. We have a fresh smelling boat and have never experienced any scum or problems of any kind. At the dock or prior to leaving the boat for a time we'll use a wet dry vac to get out every last drop and hand wipe the bilge then we will treat it with a little citris cleaner so the bilge will self clean under way. The drippless shaft coupling has greatly reduced the smell from the sour brackish water that we slip our boat in. Cleanlyness is everything when you share living in a confined space.
Just my .02 ˘