My big one states 30 degrees for roll over. At about 10' tall I'm not very comfortable with that, at 20 degrees I'm still not liking it. I do have a gage in the thing though to know where it is. Like the video when I'm on bank, I need to worry about rock chuck holes. fortunately I have big tires so I don't sink too bad but I've had it on a single wheel tool many times! I don't care for that! Anything over 20 degrees I go to my small tractor with the backhoe on, I use the backhoe as an outrigger. Issue there is it adds a lot of weight and it'll get stuck in the slop. Hay Dude has more experience cutting banks so I'm guessing his knowledge of his equipment is better than mine, most of mine is flat enough, it's just when I want to add a trail or clean along the river it gets sketchy for me. Basically follow your gut and gauge, know you fields (I'll walk a bad area before I drive it looking for a hole or soft spot) Give me a flat area to work! LOL