I tried searching, with no luck. My wife bought a crf150f last year and she has had a blast on it on our mountain trails and some desert trails. I would like to go to the dunes this summer, hopefully ooregon, and I am wondering if we should use the 6 paddle tire it came with or just a knobby? It has a pipe, soon a rev box, and she is only a 120 lbs. Has any one tried running one backward on a smaller bike to reduce the drag a little? Or shaving the paddles down a little?