Ron, a few specs... 2007 Bigfoot (thought it was an '06, turned into an '07), was tested to -18 F by previous owner (water in system, no freezing issues). Like us, he used it in winter (he and his wife are avid cross country skiers). So...it should work for late season hunting and a little ice fishing!
The rig is a 30MH26 Sl with dining room slide, had just under 22,000 miles, length is 26', height is 11'1", wheel base: 176", dry weight: 11050 lbs.. We had some gear plus about 50 gallons water (about 3/4 full) on board. The new Toyo tires were at 80 psi all the way around. So...we will first weigh it and probably dropfront tire pressure a bit.
Captain, yes we did drive it but...it was a short drive, straight open road with limited speed and distance and with some city driving (slow speed and cornering). I detected the "nervous" steering and some body roll in the testing but these issues became more apparent on I90 at speed, on mountain passes, curves, wind, road construction, etc. The "nervous" steering improved somewhat within a few hundred miles. Sometimes somewhat aggressive tires (Toyo All Terrain tires all the way around) require a few miles of use to stabilize. This is not that unusual but ... the body roll will not likely improve with tire pressure changes or an alignment (with the unit loaded). I do, however, disagree with money wasted on after market equipment. Even the Air Force periodically upgrades its aircraft as technology advances. The auto industry, much like the RV industry, rarely goes the "extra mile" (pun intended) with the best (more cost) equipment available! So...depending upon what "we the consumer" want, it falls on our shoulders to "upgrade"!