Okay, this trick is hella easy.
First off, this trick can be done virtually anywhere.

1. put you feet in the "ollie" position
2. ollie and start to rotate your body
3. rotate your body a full 900 degrees
4. land

See how easy that was! Tony Hawk is like 40, DO YOU SUCK MORE THAN A FORTY YEAR OLD? I think not. Go for it douche face!