OK...so I got caught in all this snow with my slides out. As of now, there's about 14" of accumulated snow and ice on top of my fifth wheel, with the slide deployed. I tried to get up there to brush...
We take ours up Skiing, and it snows and builds up on everything. When it's time to pack up and leave, I take a long broom up on the roof, sweep everything off, and we are good to go. Never had a problem with snow build up on there, although it sounds like you guys got a lot more than average. Let us know how it turns out.