If you own a TC long enough, you go through the 'protection of property' dance, which can last for years. In the 17 years we've owned our Lance, we started out with a thin plastic woven tarp which lasted one season here on the west slope. We then upgraded to various thicker plastic tarps which covered the sides about halfway down, also getting a year or sometimes two seasons out of them. Next was a bonafide trucker's tarp, made from very thick and resilient, water resistant and slightly breathable tan cotton duck material. The woe was it weighed 80 pounds. Difficult to install as it takes at least two hefty installers, and you really don't want to take it off after all the effort to get it up. It was so heavy I made a pitched center ribbed framework from 2x4's to go on the roof to shed rain and snow and keep the weight of snow off the vents. This worked pretty well with the caveats. Finally, to ward off the encroaching wood frame rot associated with weather, I built a small (too small) pole barn specifically for the TC, and my tractor. This worked fine until I installed solar panels which don't keep the batteries up in the dark. So, I keep the TC on the truck now-o-days and it lives in sunshine 6 months of the year and is pulled into the pole barn when the snow starts to fly.
When we lived in L.A. it was difficult and expensive to find a place to store our TC, but I did find a storage place for a couple years and that worked @ $45 per month. You do have some latitude here with some roof-only, RV storage businesses.
jefe
This one has the heavy trucker's tarp installed before the snows:
'01.5 Dodge 2500 4x4, CTD, Qcab, SB, NV5600, 241HD, 4.10's, Dana 70/TruTrac; Dana 80/ TruTrac, Spintec hub conversion, H.D. susp, 315/75R16's on 7.5" and 10" wide steel wheels, Vulcan big line, Warn M15K winch '98 Lance Lite 165s, 8' 6" X-cab, 200w Solar