Pressure is what makes duck hunting hard. Ducks imprint on properties where they don't get shot. Over the years those areas become duck magnets. Go look at the refuge in Decatur or Lake Ashbaugh in Arkansas. These areas hold ducks. The ducks there are hard to kill because they retreat to the safe areas at the first sign of pressure. If there is not a safe area then there are no ducks. Managing pressure on a piece of ground isn't easy.
The way to create a good duck hunting property is provide food and not hunt it for years. Then only hunt it once or twice a year. Get in and get out. Most of us are too greedy or don't have the resources needed .