Hilltop, one thing about September is that I am concerned about heat. I got my doe into a cooler w/ ice inside and out within 30 min. That was October, it was only about 70 degrees out. I know other hunters are more relaxed about it, but all I can say is my ground pronghorn is near to fresh ahi tuna in pure, clean flavor.
But good point about calm vs running, that is probably even more crucial!