I rode BMX as a kid and continue to ride now. I haven't raced since '99 but KarverKai is wanting to try it so I may jump in the gate when he gives it a go. We ride the track, have gone to a couple dirt jump locations and session skateparks from time to time. I would like to get better at DJ this summer. I ride skatepark or urban on my lunch hour during the summer.
I ride an old, '95ish, chromoly Haro cruiser (24") that is light, flexible and fun. On the track I prefer stiffer bikes for the power transfer but my Haro is still a lot of fun. I haven't tried a 20" in a long time though.
Kent, some riders were actually tested at a higher wattage output than the Oly Track Team. I read that Brian Lopes(BMX, MTB) tested higher and he even gave track riding a shot for a short period.
Ink