Interesting read about your hog problem. So you can trap or kill as many as you like? What do "they" expect you to do with them if you can't sell them . I imagine one can only eat so much and not everyone has a team of Iditarod dogs in Texas.
The laws and what is enforced when it comes to hogs is kind of a grey area. You can shoot them 24/7 with just about any type of weapon, no limit. You do need a hunting license, unless you are a landowner and you have a depredation permit because of damage you are experiencing on your land. I don't know if anybody ever gets one, most people who shoot hogs, shoot deer, and that's highly regulated. I have a hunting license, my wife has a hunting license. Between the two of us, we probably shoot a dozen a year. They are pests. They are no longer fun to hunt, or enjoyable to eat. We take what we want off of the young ones, and with seasoning, make a few things that we like, but it's not something we go out trying to have. It's free, so we might as well make the best of it. It's good lean meat for dog food, and they enjoy it, so that's where most of it goes. The rest of the carcass makes great coyote bait. My record is killing three coyotes off of one carcass over several days. Another record was getting two off of a carcass that where feeding on it together. Shot the first one, the second ran away, then hooked back around and off to my left. For me, that's the best thing to do with wild hogs, use them to kill coyotes.
As for the traps, and dealing with a dozen or so at a time, I haven't done that yet. I'm wanting to fence off my land to keep them out. The biggest reason I haven't done it is that I don't want to deal with a dozen dead hogs. Several times we've gotten two, and once I got three all out of the same group as they ran past me, and that's just too much work.
I have a suspicion, but I cannot prove it, that a lot of the hogs that die in the traps get buried whole just to get rid of them. I also suspect that wasting them like that is probably illegal, but that nobody is going to do anything about it. Same thing with poison. I've heard stories about massive areas being poisoned, but nobody will investigate it. There are new poisons out that are supposed to target hogs, but I don't know how that works, or how other animals that feed on them do so without getting sick.
Imagine if you had a massive gopher problem with hundreds of them. Hogs are the same, just bigger!!!