oh I found this in a run I failed but if you let your back tire clip the bottom edge while going slowly off the ramp, youll tilt in the air just enough to land on all 4 wheels. I wish anyone who attempts this in a full run good luck
yeh; looping around like you did beforehand builds up enough speed, but that takes up time... Hug-0 had a neat shortcut to solve that -- might want to check it out, although I'm not sure how easy it is