For the definitive single shot for jumps, you need to get low. Have him sit on the ground during filming. You want to be able to see as much daylight underneath your wheels as possible. That will give it the correct sense of height.
Also be sure compose so that all of you is in the frame at the highest arc of your flight. It gives a sense of a complete composition when the entire rider can stay in the frame.
For a Flip, which doesn't have a very wide angle lens, this means the filmer might have to be back a ways, and laying on his stomach to be low enough.
If you're hitting the jump multiple times, then experiment with artsy camera angles after you at least get one good holistic shot of the flight.