I've had pretty good luck with trap shy hogs by shooting them at night over bait. Corn works as good as any. Elusive Wildlife Technologies makes a motion detector light called the Blind Sider but you need to get the green version. Red scares them off. Green might also but after a night or two they accept green. Then all you need to do is get them coming and be sure they can't come in downwind of you. The only issue I had was sometimes not being able to see my cross hairs but I solved that with a lighted reticle. If the hogs are coming in the wee hours and you don't like to stay up until 3AM just cut back on they bait so they have to beat the competition to it. You can have them coming at 8PM. A camera helps a lot in figuring out their schedule.
As I've indicated before you need to stop the import of new hogs whatever that takes.
