There is no right answer here. There's too many variables involved. Soil condition, tire type, wet or dry grass, how your tractor is set up, smooth or rough terrain, ballast or no ballast, where your ballast is located, etc, etc. You have to get a feel for it. I have noticed my 1026R like the slopes better with the mower deck installed vs. the FEL and BB. I would imagine with a BH it would be even more unstable. I had a tire lift off the ground while operating the FEL on a side slope. The "pucker factor" was extremely high until I got it back on the ground. Had to take a break for a while after that.:morning2: I don't want to discourage you, but take your time and be safe rather than sorry:good2: