Arzdave-
Good advice given here. The foothills also hold deer, but my experience down in the lower country is that the deer like to bed in the mesquite draws. I was surprised how many deer we jumped out of the bottoms. They can be anywhere in that country. Last couple of times we went, we hunted the north end of the unit around sergeant canyon/deer canyon. We just camped right there with the deer (and snakes and mountain lions).
Good luck,
WH