Most preserves aren't big enough that you can hunt for hours, without going over the same ground repeatedly. They're typically divided into several fields, with different groups assigned to each field. If you're hunting scratch birds during the week rather than on the weekend, then it's possible that you might be able to have the run of the place and work to hunt the more wild-like survivors.

I've hunted a place in Missouri where they do mass releases well in advance of hunts. Talking quail here. There are feeders, and the birds are MUCH better than just-released bobs. I also hunted Wild Wing in Kentucky a few years ago. It was a "no limit" place (and they meant it), with electronic call birds, covey base camps, etc. Those birds were as close to the real thing as I've ever seen. The only difference was that numbers were so high, it was like TX in one of those years you could expect 25-30 covey days. (Will we ever see those again?)