Hi to All the Sips at Sea,
While working on an essay called America, I came across some college students at the U of A who were heavy into mountain biking. We did all of the classic cliché photos and then I decided we can do better. So I took one of the small Canon cameras with a 15mm lens and a remote cord and put it at the end of a painters pole and was actually able (for a millisecond) to get the camera under the tire as the young man did a wheely.
All the Best,