I had read where the Antelope are very curious and the article referred to flagging them.
I had a stocking hat that I wore over my cap, I affixed the stocking hat to a stick so it would blow in the wind, down in a draw I would raise the stick to be about three feet tall get some attention from the herd then lower it, after several repetitions of this I had almost the whole herd within less then a 100 yards of me.
I had read and heard many stories about flagging and/or the curiosity of the animals, as well.
About 5 years ago in Western Wyoming, I was hustling down a dry river bed to close the gap on a herd. One of the times that I climbed the bank and popped into the sagebrush to check my position, I was busted by two bucks about 75 yards away (also trying to get to the herd).
I stood still for just a moment, trying to assess the situation as the goats got more agitated; and that's when the flagging and curiosity popped into my head.
I took off my orange cap and slowly waved it around a bit with my right hand, while I bobbed and weaved my head around like a drunken cockatoo, occasionally popping my whole upper body out of sight below the sagebrush and then back up. My family was watching the entire stalk from a small hill outside of our camp, and said my little 'dance' looked absolutely ridiculous.
But, after about 30-40 seconds, the bucks looked around slowly, put their heads down, and started picking at some sagebrush. I dropped back down the bank and finished the stalk with a 180 gr Norma Vulcan (.30-06) right through the bridge of a large doe's nose, and out the base of the skull, at about 125 yards. ...From behind a natural sagebrush blind and rifle rest, sitting comfortably on my butt. They never knew what hit her, and were so confused by the doe dropping and then the human appearing over her, that even while yelling at them about how stupid they were, I ended up with most of the herd only 75-100 yards away while doing initial field-dressing. But, of course, mine was the last tag that needed to be filled, so the stupid/curious herd was of no use to us.