I purchased this cover for the camper, not so much for the snow but I have large trees overhead and those cedars are messy and will stain the top if I don't keep it covered.
I read reviews and they don't work as well in high winds but I'm going into my third year with this one and it's holding up well except for when I backed into it with the blower and burned a hole in it with the muffler, never did run on me because it was a burn.
https://www.walmart.com/ip/ADCO-Truck-Camper-Cover-Grey-SFS-AquaShed-Top-Grey-Polypropylene-Sides/47300256
Bill