RockAndSage
WKR
That limits the total number of times we can move to a new spot.
Full stop on this point. Planning on moving camps multiple times is a good way to be exhausted before you really get to know an area. Better to find a camp location that gives you foot access to multiple promising basins/treelines, and stick to each area hard before moving to the next.
finding different types of terrain is something I need to add into my planning. If there are no deer in those high basins, I need to find some areas that have more thick timber that appear to have potential in case there are none in the basins.
There will be deer in those high basins - do not fool yourself into thinking a place with feed and cover is devoid of deer just because you don't see them. The hardest mule deer hunting you can do is in thick timber. Don't hunt the timber, hunt the treelines.
are you scouting for tracks and sign?
Tracks don't lie. So, yes. It's often the first thing I do when on the ground, after I've done a solid scan with chest binos during scounting, and after I've given it a solid examination from tripod optics during season.
What becomes the process if the high open basins seem to be void of bucks?
Get your boots down to the timberlines on your first day or two, and walk the timberline looking for entrance and exit pathways - think of this as the gateway to a muley's neighborhood, or possibly even their house. It's a choke point they pass through going to and from "work", heading out in the evening for food, coming back in the morning to sleep. So look for sign. Know a buck from a doe track, especially a big buck track. Find buck tracks, mark those entry/exit spots right at the timberline on your OnX. Find a glassing point that will cover as many of those pins as possible without skylining yourself. Be at that glassing point 1 hour before sunrise/30 mins before first light, and be there from sundown until it's too dark to see.
When you first get your feet into a spot to get eyes on new territory, glass broadly with chest binos for anything standing, moving, or obvious. 5-20 mins. You are not standing on a ridgeline, or doing any rapid movements - you are tucked into a spot with a good view where you can't be easily seen. During this time you're also looking with intent for places to study carefully in high-powered binos from a tripod or from spotter. For bigger bucks, be especially careful to study shade and rimrock above the basin - places they feel most secure, where they have the best visual access to what's below, the best scent coverage for anything coming up from morning thermals, and often with their backs tucked up against a cliff/rimrock/big boulder for physical security from cougars - especially if the prevailing winds also bring scent from behind them, from where they can't see. This gives them full 360 perception opportunity. After they go hard-horn, the bigger bucks also tend to want to get away from the dumb kids of the rest of the herd.
Probably the 2 biggest mistakes guys make in glassing is, first, not stealthing in. Do everything slow, as though your life depends on it, and never, ever skyline yourself. The same way your eyes spot movement? Mule deer eyes do that for speeds as slow as 1/4 of what ours lock onto. It's things like, don't be on top of a "glassing knob", be at the base of it, and get there by going in low around the side, not cresting over anything unless you're below the brush.
The second big mistake is too much reliance on glassing, especially while often also not realizing what "glassing" really entails. It's a process, from broad scanning down to carefully picking apart every single place a deer might like to be hiding from predators and the sun, as well as their travel choke-points. And it's a process tremendously enhanced by getting your boots on the ground before your season opener and finding buck tracks. On that point, don't worry about bumping or busting out a big buck while down in their bedrooms. Within 3-4 days they'll be back, so just come back then - especially now that you know exactly where he sleeps. They choose those spots as high-value real estate, and hate not being in them during the day.