We have a sunfish at a WI cottage, which we casually sail when we are there. Our cottage is on a steep hill and there are several stairs. It is very inconvenient to carry up and down, especially as my father ages. We would like to have a PVC hoist that we could use to protect the boat but limit carrying. The shore is rocky, and we visit every few weeks in the summer. So it's important it will stay safe during storms. Any suggestions?? Or, better yet, any places where we can buy it?