We have been staying at Goose Island, Texas coast area, about a 2 week period of time for a couple of years now. We are just feet away from the water and the rig is constantly getting sprayed from the breakers. Once we are well away from the coast area we give the BH a good washing with just fresh water; start at the very top/roof and work your way down...just don't forget the rubber seals around doors, windows or slides and use a sponge ("hosing it down" is not a good way to go). I do this very carefully with a running hose/and/or bucket of fresh water; using my hand I open up the slide seals to the inside and hose it down well because the salt gets behind the seals (it's a tricky devil!!) I use a low volume water flow when I do the seals so as not to get water inside. I then treat the rubber with a protective sealant I purchase through camping world. It is a long drawn out process but considering what the salt/sea air can do it is definitly the way to go!