Suggestions on RV lean to

I would check with your city for a carport. Where I live in KS carports are not considered a permanent structure and not taxed. Mine was less then 2k and I upgraded to heavier metal for the framework (roof is still the same thickness). My carport at the house is 12'x21' and I poured a concrete pad to park on. The Weather channel dropped bowling balls from a 3 story building on to a roof of a carport and none went through. They were demonstrating what hail could do to a car. You would have to check what snow load they are rated for. Another option would be to build a wood carport structure if the city would allow it. I don't think a tarp is going to hold up very long and would probably be a eyesore.