Other obligations? I hope you’re not putting too many irons in the fire with a rut hunt for whitetail interfering with your mulie hunt. If you’re planning a western hunt do it right or don’t bother. It’s big country and it’s wise to do everything you can to put the odds in your favor. If you don’t care about the size of animals you kill and are happy with a 3 point pencil rack then you’ll be fine. But if you’ve been drooling over pictures of 4x4 bucks you need to think about your priorities.
I agree with this - if you are gonna travel to hunt, give it 110% or stay home cause the game is rigged against you from the git-go. If you want a trophy buck you will either trip over him - or you will earn him. I'm not sure what the ratio is but I'd favor sheer effort and being able to shoot when the opportunity hits.
4 of us went on a trip this past season (2019) and hunted from full light until dark for 6 days, then evenings only for days 7 and 8 cause we knew where to be. Took a good 4x4 (159 inch) on day 6 and missed a nice 3x3 (about 120-130 inch) n day 7 and missed a 2x2 on day 8. Not bad for first ever mule deer hunt. Guy who got 4x4 shot 350 or so rounds prepping, guy who missed said he shot "about" 100 rounds prepping. Guy 3 left early with bad cold. Guy 4 was camp cook and not hunting but enjoying the trip.
We went wrong by heading out at daylight - should have been in position before daylight and glassing. It is tough work to find the deer and that's where your knowledge of the area comes in handy - in our case we were 1 step behind everywhere we went - always tire tracks, folks coming out as we went in, people driving where they weren't supposed to be driving, etc. Opening day was a let-down but also a lesson is how well the deer blend in - saw a guy running after a buck he'd spooked (there were 2 big ones in that area) and I was glassing cause I was working over there - never saw the deer he was trying to catch. Same for when we got back to camp with guy #4 telling us there's deer on that ridge 400 yards from camp - we all got good looks at bedded deer with our optics and if we didn't know where they were I don't know if we'd have spotted them without a white rump patch. (I'm upgrading my binocs before next trip.)
We tried the walk the gullies kind of hunting and just saw other hunters.
We had better success by sharing intel with some guys and by being on stand during the prime periods. I saw 7 by standing on a finger ridge, buddy saw 4 sitting on a rimrock overlooking a cottonwood bottom, we saw deer and tons of deer sign in waist high sage, etc.
If I was gonna do it again, I'd head back to same area, get an 8 ft step ladder and set it up in the back of the pickup- drop the other guys off where they can get on a hilltop and glass, and then head to where I could see miles and glass - we'd do this every morning from before first grey until 10 am - then regroup, have a bite, compare notes and maybe do an assault on a bedding area. Have another bite and get back in position - same location or diff for the evening movement. Always ready to throw caution in the wind and stalk or shoot, but primary thing is finding the deer where we can kill them. After we find the deer, then go kill one or two.
Last note is that they do travel quite a bit when spooked and don;t return like whitetails often do. That's why being second is tough if the deer spook instead of holding tight.
Its a great trip - you'll have fun.