I have been a member of QDMA since in begun in 1988. Joe Hamilton, the founder of QDMA, was a state biologist in coastal SC where I lived and hunted and got us into it.
At our club in GA we have practiced QDM for about 8 years now. During bow season any buck 4 points or better can be taken. During gun season, 15" inside spread, at least 4 points on one side or at least 3 1/2 years old. We can take as many does as the law allows(in GA that is 10).
We started practicing QDM to get members to study the deer before they shot. We tried to impress that we had too many does that needed thinning and that too many young bucks(1 1/2to 2 1/2yo) were being shot before they reached their potential. In the last 6 or so years we have seen more and bigger bucks, more 1 1/2 ans 2 1/2 yo bucks with good potential and there are still plenty of does for the freezer.
I agree that any deer with trad equipment is a trophy but with as many deer as there are in our woods, there is no reason to take small bucks plus for us it has really improved the herd in our area.
Our club is only 250 ac but we have convinced our neighbor that owns the 2500 ac surrounding us to require QDM for anyone that leases his farm for hunting or who is invited to hunt it for a sit or 2. Pat