Tactics....
Use your bino's A LOT! During spot and stalk, of course, but also at close range, and to pattern deer from a far.
Mule deer are hard to pattern, exactly, but funnels are still there, just on a bigger scale. One area I hunt has a steep gully running down a minor drainage, and some rocky cliffs above that, so the area between is only 60 yards or so. The deer feed through in the morning fairly consistently, because they don't like to descent into the gully, and there is no food in the rocks. See? I spotted this area from across a canyon while waiting over a waterhole, and rarely hunt the waterhole any more.
If you have a partner, mini-pushes pay off occasionally. The deer have too many options on where to run during a big drive. B say you spot some bedding in a clump of timber, but don't know EXACTLY where they are. Stalking them to 20 yards without them seeing you, when you don't know where they are is risky. But if you stalk to 50, then your buddy passes 100 yards under them and gives them his scent, they will stand up and mill around, etc, sometimes move quietly away. The good part is that they are focused on the pusher, not the shooter, and sneaking within 40 or 50 yards usually isn't that tough. Finding the deer and getting a shot is the hard part, once you get over there.