The cover should drop below your camper so the straps should only rub underneath.
I bought an ADCO one for a decent price, I forget the model, basic car cover woven waffle poly fabric, but I did make the mistake of getting one with no zippers or Velcro for the doors. It would be nice to be able to get into the TT while covered. One season, no probs. Pad those protrusions and sharp edges. Pool noodles are cheap and useful. I used short sections over th gutter tips. Pipe insulation works the same but pre sliced and oft has a glue edge.
2019 Wolf Pup 16 BHS Limited, axle flipped
2019 F150 4x4 SCrew SB STX 5.0 3.55 factory tow package, 7000#GVWR, 1990 CC Tow mirrors, ITBC, SumoSprings,