Well, all the deer are in the controlled areas that you can't access. A really tall fence keeps them in. Just kidding of course. But the reality is not so different. The areas outside of the controlled areas have much less "terrain" that deer like, and it's drier, flatter, and is pretty accessible to 4wd trucks and ATVs. Antelope and Jackrabbit country. If you have a standard rifle tag or archery tag, the hunt dates will be prior to any in-migration from the Owyhee Mtns in Idaho, so you're dealing with the resident population only. In recent years the migration hunt has been poor as well.
Owyhee river breaks from the north all the way south to the West Little Owyhee country, the area near Nevada east of McDermitt, (but not in the Indian Reservation and frustratingly close to "real" mountains in Nevada that have lots of deer), along the Idaho border on the north half the unit (also frustratingly close to the Owyhee Mtns in Idaho), all have the most terrain and water, so they're probably your best bet. None have lots of deer, but they have some, and someone takes a nice one or two every year.