my friend kevin did it at bristol mountain on easter two years i think.
it was pretty sweet. he got a local shop to donate some prizez and got a big sound sytem and everything. it was more of a jump jam/tweak off though. but it went of pretty well. all the proceeds benefited mercy flight
a ton of people came, at first he thought it was just gonna be all of us and our friends sessioning the park but then a bunch of really random kids and totally non-locals showed up. it was mad fun.