Do I need bottom paint if I store my boat out of the water when I'm not using it?

Bottom paint typically refers to antifouling paint, which has a flat, dull finish, and is used below the waterline to prevent growth of marine fouling organisms that attach to the hull and underwater metals. Fouling can affect a boat's speed and performance if you keep your boat in the water for extended periods. If you don’t keep your boat in the water for extended periods of time, you probably don't need bottom paint.