A group of us do game management shooting on a large South Texas ranch...does, varmits, and hogs. Even with about 10 guys shooting, this ranch is getting over run. The owner is scheduling a helicopter for us to shoot out of.....I can't wait! Am hearing rumors of night vision fitted 308's for when the sun goes down! I also can't take anybody else to this ranch, sorry.
I would suggest you contact the local feed stores in the area you want hunt. Many times the feed stores know of ranchers that want the hogs gone. Around here there are guys that charge the ranches for killing the hogs...kinda of the reverse of pay for hunting. You may well find a place to hunt for free if you ask around.
If you do, say thanks, follow any rules the rancher lays down, take plenty of shells, big ice chests, spot lights, and sharp knives. A AR platform rifle is great...my favorite is a AK47 with a red dot...this ain't benchrest shooting, this is all about a dose of lead to the head. These ranchers want hogs killed, it isn't sport to them, they just want them dead. Don't go shoot one hog, go kill every one you see.......you will get invited back.