It's funny cause the resort I patrol at is on public land. When people go out of bounds we won't clip their passes (as far as I know) we just stop them when they come back in bounds and explain to them the dangers of heading out of bounds.
As for the ALTA issue, I say fuck it. Why give them the right to have your money?!? If it's public land just snowmobile up the thing and board down poaching the best powder stashes! Elitist dorks...