About ten years ago I did a week long archery hunt in the northern part of that mountain range. A drainage called Middle fork cottonwood. On a scouting trip in the early summer we saw some elk so since it is in the back pocket of the world we thought we were set. Get there in mid September and find a thousand or more Angus cattle. Everywhere there were cattle there were no elk. I talked my brother-in-law, who was annoyed and disgusted with the area, to hike to the top of a hill so we could have a view of the countryside. We saw several elk about two miles away on some private sections in the Loco-Castle creek area. The second to the last day we found an area in the west fork of cottonwood where the cattle had not populated. We heard a bugle that morning and boy did we set off in the bull's direction. Alas, the bull had a herd and they went down into the drainage and he shut up. That evening we saw him and his cows on the other side of west fork. A heavy five point. He was bugling and staying out in the open until it got too dark to see. We were on that side the next morning and the herd was no where to be found. We found some tracks headed for the top away from us and that was the last morning we could hunt.
Do some scouting ahead of time in that range, better if you can find some private land to hunt on. Stay away from the cattle. It is very pretty country and remote, but come hunting season it can be popular. Lot of antelope and deer to see on the private lands when you drive up.