Lot's of turkey hunting in South Texas.
There are also lots of outfitters who will take on turkey hunters.
A lot of ranch owners make money off their wildlife. Because of liabilities, few, if any, landowners will allow you to "self guide".
"IF" you find the right landowner and return several times, he may eventually get to trust you and allow you to hunt unguided.
There are "some" public land options, but that will take some research.