Could just be me, but the 5 minutes it takes to burn a doobie isnt worth the cuple of hours id take to build one of these.
That's what I was thinking. Besides that, if you were concerned about getting caught, wouldn't it make more sense to pick some random spot out in the woods rather than go to a designated meeting place?
I've never even heard of such a structure. We have warming huts on the nordic network out here, but I've never heard of any doobie shacks. I guess I hang out with the wrong crowd.