Skateboard Jumping Question

[dsm]

I was watching some sports channel where they featured teenagers jumping over fire hydrants, big upright trash cans, & up onto hand railings without using a ramp of any kind to help them get air.

Question: How do they get the board to travel up with them without a strap on their foot (like snowboarders), or without using their hand to grab and pull the board up with them?



-dsm