I'm no expert, but have taken a few in Wyoming and Montana. I believe that from mid to late September they are rutting which makes hunting these critters entertaining.
One tactic I used successfully was to find a fence crossing (common for them to cross at the same spot) and set up a blind of some sort about 20 yards from there.
Another is to set up a blind at water holes or windmills since they tend to drink daily. Even though they tend to drink mostly at mid-morning, be there before daylight to see everything come alive.
I've used decoys but never had enough success with that method even though I've read about its effectiveness for some hunters.