i was looking on that site before and i couldn't find where is said to regester to be a member. i tried goign to a comp at the end of the year at moonstone but i had to be registered as a member so i didnt go.
you first gotta go to the water ramp session and qualify your airs on water. then you gotta qualify them on snow. then you're allowed to throw them. if you don't qualify your inverts, we disqualify you