Brian I am constantly amazed by how many people read only the first post then jump for the "Post Reply" button.
I agree with you that ASC is not a "policing authority" by any means. It's up to the individual fields/player's associations/groups to police themselves.
On the lighter side of things, really this whole issue is only because of a small fraction of really really motivated stoners. Think about it, to play airsoft you gotta pack a vehicle, drive to the field, load all your gear and mags, trudge around in the bush.... Alot of effort just to toke it up in the bush...OR!!!
Do what most stoners do and stay at home on the couch playing PS3 and eating cheetos...