We just went through our first winter with our 19, and left it uncovered all winter. After spending all day Saturday giving it a good bath, I plan on getting some sort of cover for it before next winter (I got it clean, but have lots of black streaks that I need to work on). I'm still trying to decide if I want to build a permanent shelter over it or go with a Calmark cover (we do get a lot of wind during the winter, so would want the good quality cover). If we were planning on staying at our current home for more than a few more years, then we would definitely invest in a permanent structure. But since we don't, getting a good cover that we could take with us to our next home might make more sense.