In Texas, it's legal to feed the deer to get them where you want them. Feeding benefits the deer more than the hunter. All of the deer will get the benefit of the supplemental grain in their diet, not just the one I'll bag and take home. If you are maintaining a lease from year to year, supplemental feeding helps insure productive hunting and a healthier population.
Many people feed year round, as the game ranches do.
At the very latest you should start feeding on your lease by September 1. Another common mistake is to stop feeding at the end of deer season, when times are tough for the deer. Continue feeding through March, to give the animals the best chance at having a healthy wintering. Feeders come in all flavors. You can buy a kit for about a hundred bucks on the low end.