I was in on 3 Montana moose hunts in the '80s. Two were with my own tags and the other with a friend who had drawn a tag . All were in the same unit and only about a mile apart. I/we didn't do any preseason scouting other than a ride through the area the day before the season opened.
I found two of these bulls in open areas with water and willows. The third, and my biggest bull was with a cow and was in open timber near a willow park. We didn't do any calling before of during any of those hunts.
All 3 of these bulls were several miles from the trailhead and we used my horses to pack them out. I was solo hunting when I shot my 2nd bull and I had quite a job getting the moose pieces parts into the panniers on and off of my horses.
Three years ago I shot a Canadian moose on a guided hunt in northern Alberta. My guide had called moose every day that we hunted. By September 20th, the 4th day of a 7 day hunt, we hadn't seen any moose, and finally a bull answered one of my guide's calls.
We had set up in the middle of a large willow park and that bull came out of the timper into the park about 75 yards from us. He was not as large as my 2 Montana bulls, but after 2 unsuccessful moose hunts in Newfouondland and Alaska, and being half way through that hunt without even seeing a moose, I let my .300 Weatherby speak and I brought home 2 large coolers of moose meat.