My parking spot next to my house does not allow for level straight hook ups. It is not an issue. Drop the tongue onto the ball, latch, then use the tongue jack to raise the trailer tongue up higher than normal. This allows the bars to be snapped up easily, if you do not raise the trailer with the tongue jack it will be nearly impossible to snap up the bars. Once set, raise the tongue jack. I have definitely traveled some un-level terrain and had no issues with the DC. When you do the initial set up, make sure there is good clearance with the cams and the frame. Initial set up with the DC takes some time and adjustments, but once set correctly is an excellent system.