After reading this thread I'm wondering if a person cut the tapered area off of the ramp & welded a vertical plate there. big hyd floor jack to get it up into the depressions since you ain't got no ramp. (4) of em & you'd have your height & safety and no peripheral anything to block your movement. I'd start with some heavy duty ramps

live every 24 hour block of time like it's your last day on earth