We have some public land here, Its Type Two Public Hunting Land. Called the Moore Plantation. You can hunt Feral Hog Year Round, with no bag limit.
It only cost 48 dollars a year for a Permit. You will be hunting on your own with no guide.
If you purchase the Type Two hunting permit, you will be provided with a map book that has all of the rules and regulations.
I have killed some big hogs in this forrest myself, there are alot of them.
Contact Texas Parks and Wildlife for more information.
Here is their website.
http://www.tpwd.state.tx.us/