I hunt west of Gustine about 20 miles off HWY 573 out of Comanche. We've had lots of high-fencing going on along the first 3 miles of HWY 573 southeast of Hwy 590. A ranch on our south fence line high-fenced the week before gun season started.
All the high-fencing this year has definitely changed the deer pattern, but still too early how much good or bad it has done. For me, where I had my stand, I saw more bucks this year than ever; a very high number of young bucks. I saw only one doe along that high-fence, and she was most assuredly looking for away to get back to the other side!
Gustine has some pockets with some good herds, so it probably depends where you're hunting. There are a couple of people on here that do hunt around Gustine. One of them got a picture of a javelina on his trail cam 2 years ago! Unheard of for the area!