Buy guns for everyone you know that plays there.
But really, that sucks. I've had the same thing happen to one of our rinks in the city. Fortunately, for us, there was no damage to the doors or anything like that - we bring our own nets. Just graffiti on the walls everywhere. It's disgusting.
I really like the idea of the band benefit thing. Just as long as the crowd knows what the cover cost is going towards, it's a splendid idea. Don't make them pay for something they don't know they're paying for.
