I don't think RV's should have to "suffer" through ice storms like this one:
Yep, those are icicles!!!.
That is the parking lot in front of the RV. Solid ice. I started walking on it, but stopped, because I knew I would be busting something that didn't need busting.
With two ceramic heaters I stayed warm enough for most of the winter. With the two heaters it kept the inside to a temperature of about 25 degrees above the outside temperature. My water lines froze up only twice during the winter. Fortunately, no damage occurred during the freeze-ups. I was very happy to see Spring.