side note on cats... to keep cats from pissing in your boat. use a live cage trap like the ones for raccons. and before you turn fluffy lose to go back home to the cat lady down the street,, set the pressure washer on low or medium and give fluffy the once over.
now the key is not to let up to soon. if you just piss it off it will come back in a few days keep up the water treatment until the cat gives up hope and just hangs its head in defeat.. after that they never come back. takes a week or so to get all the cats in the area but its well worth the work and really fun.