I got an impact wrench, not skerd!
How well did the house to frame joint hold up, and general waterproofing? It doesn't seem constructed of one solid piece of fiberglass like a coach house or chinook but does seem well built.
I do have faith in coachmen fiberglass. On my van a few years back late at night in a storm I hit a roof overhang at a hotel on the top. Not too fast but heard a thump, and it literally forced the van down an inch or two, I backed up, expecting to see major damage. Nope. Scratched gel coat was all. I was impressed.