One thing that really works sounds silly: Hog oiler! Those ******* have sensitive skin. One of the reasons you will find “rubbings” on telephone/electricity poles. Some rubbings I have around here are about 5 ft tall.
Take some old, used cooking oil. Go to where you want the hogs to go. Pour that oil on a bunch of trees in that area. Keeps this up and the hogs will not come back to your place.