Fireball2 & Rainshadow1: Indeed Mt. Lions do cover a LOT of territory - one of my early Hunting mentors claimed that Mt. Lions have huge circular routes and stop by their favored haunts about every 12 to 20 days.
I don't know about that time schedule.
He Hunted Mt. Lions back when there was a bounty on them in Washington state and brought MANY of them to bag.
The few folks I know who call Hunt Mt. Lions these days do so in two ways:
#1: They concentrate on calling in the small areas where Mule Deer congregate in winter - approach that area on foot and well camoed (usually snow camo at the time of year they call Hunt) and use fawn bleet type calls.
#2: Drive the back roads/trails after a fresh snow and look for fresh tracks then call. Again this driving and looking for tracks is done in areas where Mule Deer concentrate in winter.
Rainshadow1 there used to be lots of Mt. Lions there in eastern Washington near Malo/Lk. Curlew - good luck if you get up thataway.
Hold into the wind
VarmintGuy