I have a blurry 8mm B+W film clip of that move somewhere in a box in the attic.....

I will keep the Bigfoot technique in mind, sounds like a good idea and definately one to try sometime--thanks for the description.

This summer with some friends we had to go about 20 mins or so on really tight washboard on a dirt road that cars had made. I was surprised how close together the ridges were, but we just sorta bumbled along (shook along really) at a speed that kept it to the least vibratey. (road tires though, 28s)