I have seen Dan Olson free style jump a couple times. He and a few other of the top free style jumpers in the country skied in an exhibition put on by the Dolphin Wetsuit guys at the LA Night Jam a couple years ago. These guys were throwing tricks that no other free style jumpers in the country have even thought of yet. All 4 of the guys there were on wake skis, these are basically light and strong twin tip jump skis inspired by wakeboard technology. I could not find a video of Dan or any of the other guys from the LA Night Jam so this vid of Dan killing it at a cable park will have to do.