RE: unit 52-San Antonio
I'm pretty sure you can no longer (legally) drive up the road on the south side of San Antonio Mtn. It was on BLM land (along a fence) and took you up to the edge of some trees, but probably moot point now. There is water at the top (SE side I think), sometimes you'll see antelope go all the way up, I'm pretty sure to get a drink. There was another road on SE side that took you to a corral, near a patch of trees, but I'm pretty sure it's also closed. Makes a long-ass hike even longer.
The Lagunitas area usually has a lot of elk, they just always seem to be downhill of the road, so it can be a tough haul getting one out. I shot my first elk up there 13 years ago, always liked the area, but haven't hunted it in awhile. The Cruces basin is another good spot (Wilderness).