I leave my Lund 2100 Fisherman in the water and in a slip from May 1 to Oct 1. I'm on the St. Lawrence River in Cape Vincent. No bottom paint on mine. I will get a fair amount of algae build up especially on the shady side of the boat. I leave my motor trimmed down because I am afraid other boats coming in or out could hit my rear end with the motor up.. At the end of the year I take my trailer down to a local marina and leave it. I then take my boat down and leave it tied up. The boat is picked out of the water on a huge fork lift and taken to a steam jenny/pressure wash statiion. The entire underside of the boat, transom and motor are cleaned off. Then the boat is set on my trailer from the fork lift. Protect your transducer wires if someone will be using a pressure washer. I use split wire loom.