After we do a long run and are in a marina, we close up the windows, fire up the A/C and hose the boat down, top to bottom twice. Full wash with soap once a month minimum, before a big trip, after a big trip, or after a heavy spray run which has not happened yet with our current boat.
Read> Washing Down: Boat Maintenance and Repairs
No teak decks!!!
Our bilge is always wet from conventional shaft packing and A/C drains.