Looking for ideas with bedrail clearence on 2013 Ram 2500

Yeah your correct I thought i was on level ground when I took the picture but after looking it the back of the pickup is just past the crown of the driveway. The measurements I took again were on level ground. My inlaws lake spot were going to next weekend is about the tightest spot with some bad inclines I've been to if I can make that I should be good.