If you have any doubts about QDM and if it works, this is a prime example that it does. The Chester River QDMA Co-op on the Eastern Shores of Maryland has 22,000 acres that are under the QDM principles. This year a 194-3/8 inch buck was harvested by Brian Sears during the early muzzleloader season. They have been managing their doe population and letting the young bucks walk and this is the results. Healthier deer, less crop damage and larger bucks! Any questions?