IMO takes a LOT more effort than hunting deer or released pheasant. Spend your spring and summer looking at places you can reach, the more out-of-the-way the better. Be where people are too lazy to get to. Find what would attract ducks and look for them as well. Seasons change bird patterns in some cases and not others. Determine if a place is dry in July but would bet wet in winter or with rains. Lotsa time, lotsa miles but that's the investment to success.