Iver - We exchanged a few PM's about playing in Williston. I actually live in Billings and play the occasional day at diamond.
There is one air field setup. Get ahold of me and I can find out what day the local teams practice there. It would be worth a drive over here. From Williston it is probably a 4.5 hr drive. Just drive to Glendive (through Fairview/Sidney) and jump on the Interstate. If we get things figured out in advance, I have a couch you can sleep on. Though it is kinda small - I am sure one of the local team players might be able to give you a place to sleep.
In fact, if you have any local teams looking to play a good local tournament, send them over for the RMPS stop that will be in Billings. Between the Bzerkerz, Awesome, and a few up and coming young teams, they should get a good tournament. Who knows, Carnage might even stop in again=)
EDIT - Also check out our Website for the entire state
The best 4 years of my life. It may never happen again but it will be remembered.