Lots of reviews of ADCO covers on Amazon. (Full cover and the topper) Biggest complaint seems to be that they tear in the wind.
You might be able to put reinforcing points on it with Scotch 77 Spray adhesive, maybe more tie-downs.
I looked at this type with an eye to making some sort of sunshade for my 37 foot Class A. I think there would be a market for something with Aluminized Mylar bonded to the Tyvek.
Jim and Valerie, 2005 Winnie Adventurer 37B, 2014 Subaru Forester Toad, hitches, brakes, anti-sways, autopilot, gourmet food on a Social Security budget.
"Wave as you go by."