Here is more advice. We have a ranch that we used to lease out but due to abuses, we now only hunt by invitation only. The abuses were the following:
1. leaving gates open.
2. leaving unGodly ruts in the pastures (just because you have an F350 4X4, use some common sense and walk the extra 70 yards!).
3. leaving beer cans, bottles, and cigarette buts all over. (even though there are many smokers in our family, they always burried the butt or stuffed it in their pocket, not flicked it on the ground).
4. Cutting down big oak trees rather than moving deerstands.
5. Drunkeness while out in the woods with guns.
6. General uncourteousness.
OK, that is the rundown of things that will surely get you tossed, lease or no lease. Sometimes, if you're lucky, you might weasel yourself into a squirell hunt, and if you show respect and good behavior, they might add fishing the next year, and maybe hogs the next. If you are really doing well, you might even get to kill deer in 2 years.
I have found that in Texas, you have to know somebody. I have been invited to kill axis does and inferior bucks for nothing but being willing to kill and clean a few for the landowners too.
Remember that courtesy is the primary concern. If you are smart, you will also send cards and thank-you notes when you find a place to hunt for free. You might also take the landowner and his wife out to eat or bring them something when you come. You might be surprised at what you can get if you are willing to earn your priveleges rather than buy them. The good thing about earning them is that once you're in, you're really in!
Good luck!