I don't know if this is really a trick, but here's how I did it: I kept my scooter as north as possible most of the time. Had my eyes focused on the right of the screen. When I saw a hole coming up at the top of the road, i pressed down, and when the hole'd passed me, up again. There's a chance Frank's (It was Frank right? It's been a while) scooter will be in your way and you'll take a fall. But you can have a couple of falls, so it's not that bad.
Hope that helps.