Un-level ground and Trailmanors

Hi folks. My wife and I have been "pop-up campers" for 16 years, and are considering a Trailmanor (and a few other campers). We just drove 400 miles to look at campers this past week. After looking at several Trailmanors at one RV dealer, we went to a nearby dealer to look at non-folding campers. When we told the salesman we had been looking at Trailmanors, he commented that unless the ground is VERY level, you can't raise a Trailmanor.

Okay...I would think you need a pretty level spot to raise a Trailmanor, but is this a big issue for those who don't always camp on a perfectly-level pad? We do a bit of dry camping away from campgrounds, and sometimes we dig out a spot or raise one side of our pop-up with the little stack of boards we carry around.

Thank you for your input...