olbiffer, I have the narcolepsy problem as well, that's why I don't hunt in tree stands. Something about the tranquility and fresh air puts me right to sleep, and that ain't good twelve feet in the air.
I look forward to hearing different techniques on ground blind set up though. I don't use a pop up blind, I usually look for natural cover or drag a couple of dead falls over and lean them up against a tree just to break up my outline.
Then I set up my folding stool and fall asleep.