Well one tip when your driving around is to be patient. The deer up there have learned when they hear the gravel crunch from vehicles they run out of the field. Leaving only the younger deer out for you to see. That's why when you drive by the field most of the time the big boys have made their exit. So you think only small deer are in that area. If you park your vehicle and are willing to wait for 20 minutes or less they will wall back out again. Found many good deer that way. Dont be afraid to venture out and walk to the fields where driving is not permitted. If your quite on your approach you can catch them out in the more hard to access fields. Also there is several mixes of genetics. Most of the larger deer are up front body wise they have a shorter face but more blocky look. The Texas genetic shows up more in the back half. You tend to find the wider rack bucks in that area but slimmer body type.
Check the clover fields hard. Most are planted in a mix of oats and clover. Some pure stands of clover are there.
Check corn fields after they have been planted for a few weeks some if the weeds and grass is trying to come up that the deer eat. Look hard in middle to late August when the corn is ripening up.
Areas to check out peavy hollow, henagerbend, long hollow, big springs, back valley, forks of the river "mostly the front half of that area", or even mossy springs. Just a few zones I have found good deer to hunt. There are several others but that should help you find a good one.
Now this is just me but on my hunts up there I always pass on bucks that are smaller then eight point unless it's a weird rare antler look or an injured buck. Here is good example of letting one walk. I called him diamond head. He has been dead for around 6 years but I let him walk for 2 years and he made it to be a really nice buck. The last 2 pictures is him at 1.5 years old the last picture is him at 4. Huge jump just by not shooting smaller deer. But that's what I do not going to force people to pass on deer they want.