I never wipe my down after a weekend on the water. Before I go out, I'll give it good cleaning but I have a hard time time getting the old water spots off and with my boat being black it really shows water spots BAD! I was using a mix of vinegar and water and it did ok but still didn't look good. Then one day I mixed vinegar, water, and CLR. Water spots wiped right off and my boat looks like new. I borrowed a carpet machine with a hose attachment and cleaned the carpet. On my other boat, I cleaned it out, took it to a car wash and power sprayed the carpet. Let it sit out in the sun during the day to dry.