the absolute #1 improvement we made about 15 years ago was no longer allowing hunters to kill "spikes". The neighbors reluctantly agreed to do the same a few years later. 95% of the spikes these guys were killing were simply 1st year deer who were just breaking out in mid December.
We run game cams and print out target pictures and make a guide book for each member to posses. This has helped a ton in regards to eliminating the happy trigger pulls on the 3-5 year old deer.
Also culling our members on the property to actual hunters who are willing to put in more than just 3 sits a season, and guys who would bring their family and friends along and allow them to shoot whatever walked out first.
I run protein in a timed feeder at midnight from Memorial Day till Labor Day, and run the free range protein feeders from Halloween till mid March. The mature bucks will dominate the herd at the midnight feedings. We do not feed corn.
Stands are placed on trail lines between cover and water, and the majority of our hunters prefer to hunt between 9am-4pm.
Our overall success rate has improved dramatically.
I mix in some milo in the timed feeders for the quail and turkey, and we try and burn pasture when the weather allows. Generally about every 4-6 years. Cattle and goats will unknowingly trample quail nests. But, the most important thing is always the timing of the rain. Mother Nature is the biggest factor in the success of our places. Quail need tons of bugs in the spring.