We have a feeder with a 34" tall hog panel circle around it. Feeder is in middle and is a spin feeder but we added a 12" piece of plastic culvert under feeder (around the spinner). Timer goes off and the corn hits the culvert and drops almost straight down. We set timer at 8am and 4pm, and had deer coming to it as soon as spinner started running (you can hear it).

No hogs have gotten through the panel fence. I think it is 8 panels 16' long and we used 32 T posts, about one every 4 feet. We drive the T post so top of it is even with top of panel, so it is deeper than a usual barbwire fence. Very sturdy.