I picked up on the 12,000 ft you mentioned. That's above treeline. It's where the big bulls hang out. I'm after a herd that can be found at 10,000-11,000ft, and sometimes lower. They can really be anywhere in Sept. As long as they have all there needs. Food, water, and shelter. I live at 8000ft, and see elk in Sept in my area.
I don't bugle, because it's generally a challenge to the herd bulls. Younger bulls don't come to challenges. My observation anyway. I want the young bull. It comes running to cow calls trying to beat the lead herd bull.
This is how i've done it in the past, because i've been alone. I never wanted to get a full grown bull. Way too hard for me to get the meat out. With Jon's help I may go for a bigger bull this time.
It will be an either sex tag, so a nice tender cow is not out of the question either.