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One Foot Grind:  [4/10] difficulty (Tricks required:  Rail)

You can pull any grind but land with one foot on the board and grind/slide

for 50-50 or board slide, it doesn't matter which foot your balance with,

but with other grinds or slides your foot needs to be over the part of the board/trucks

that is comming in contract with the object your sliding i.e.

5-0 - backfoot

nosegrind - frontfoot

smith/feeble - backfoot