thanks for pointing me to the thread....wah, but it's from 2007, not sure if still the same now.
anyway, the one at ssdc sounds damn thrilling man. interesting skills to pick up.
not sure if cdc does similar stuff. cos the one @bbdc is kinda different.
i saw one of the instructors playing inside fig.8 with left arm behind his back before....
maybe he was warming up for DRC
quite amazing to see them when they are playing on their bikes