I too am handicapped and my cardiologist has told that ladders are not in my network anymore. That said, I get one of my able bodied son in laws to climb up there and help me cover my RV every Winter and then uncover it again in the Spring. It has become too much to ask to do it every time we want to use it in Summer so we only cover over Winter. I had a couple of trailers prior to our current Class C. The first one we only had for 4 seasons and never covered it. The second we had for 7 years and covered it for the last 5. The reason we started to cover it was because the storage facility we were using had large cedar trees all around and in Spring the roof and trailer were all a lovely shade of green. With a cover, the cover turned green but the RV under it stayed as clean as the last time we washed and covered it. As a bonus, there were no permanent leaf stain imprints on the roof and leaks never happened. Our decals stayed nice and bright as well as the finish of the unit. I got top dollar when I sold it due to the condition of it.
Our current RV is also covered in a different lot (no trees) but I find the peace of mind of not having to worry about leaks or the unit getting dirty while stored is worth it. Hopefully you have someone who can help you with the cover. Maybe a neighborhood teenager who would appreciate a $20 to help you out.
2008 Winnebago Aspect E450 26A. Oh, yeah, the wife and geriatric Beagle, Irwin, come along too.