I have been bow hunting mule deer for the last 5 years, I have bought 6 mule deer tags, and have harvested 6 mule deer all on public land, some in the desert, some in the pines, midrange junpers, and above treeline, the most important thing i have found is staying in the woods, not going back after a mornings hunt and sleeping but by devoting myself to the animal I am hunting, I would have to say spot and stalk is the best aproach to hunting big mulie's, as said before bed them up if they are bedding in the timber beat them in there wait for them to come to you, follow them till they bed wait 30 mins for them to put there head on the ground, sneak up and shoot them at 20 yrds! also i recomend if you find a good buck pattern him and place a tree stand, only hunt this when conditions are perfect and dont try still hunting his bedding ground, move to another location to do your mid day still hunting, it takes you 1 time to jump a big buck out of his secret spot for him not to come back.
I learned this one the hard way.
find out what area's hold alot of deer for still hunting
and find out where 1 or 2 big bucks are, study them spend time with them and when season comes dont give up on them.
Archery hunting can be very discouraging at times dont give up,
anyone one can second me on this stalking a big buck under the 100 yrd mark is the most heart pounding electrifing experiance that you will ever do, when you can't swallow and you heart is thumping in your ears WOW it's something unnatural for sure
Buy a bow tech shoot it lots scout a buck and spend 20-40 days with him good luck.