I tried an ADCO cover this past winter. Never again. It did more damage than good. My tt is 6 years old and had never been covered before and still looked new. I found the cover new in box at a garage sale for $80 so I figured why not. It fit snug and was strapped properly. I had to remove my rain gutters to fit and so they wouldn’t tear holes in the corners.
The black aluminum bottom skirting on my trailer now has 4 places that are rubbed bare from the straps, the front cap finish is dull and has a cross worn into it from the cross strapping and every roof protrusion wore holes or tore the cover. It shredded around the antenna, AC, and roof vents. It didn’t last 4 months and is now in the garbage.