When I lived in SC, I also put together an Excel sheet showing times the hogs arrived at my feeder, just to realize they don't run on a schedule.
I had access to over 2,200 acres, which was split into about 15 separate pieces of land. Several of these were within a thousand feet of each other. At one point, I had 3 feeders within about two thousand feet of each other. In looking at the camera times, I found that I was driving back and forth between locations and missing the hogs. When I reduced the number of feeders in a small area, my kill count went up significantly.
For the spots that I baited, I did everything I could to give the hogs plenty of corn and to make it as hard as possible to get it. I would dig two or three holes with a post hole digger and fill them with soured corn. I would then take limbs off trees and build a log pile on top of the holes so the hogs had to "dig" through the limbs to get to the corn. It kept the hogs in the spot longer than if I'd just thrown the corn out.
I also had good luck with a boss buck battery feeder. The hogs would get used to the feeder going off after a few weeks and would often be at the feeder waiting for the corn to drop.
Hogs learn quickly, so if you've only got one spot, they will learn to avoid and to have their guard up when visiting your spot.
Good luck!