Except for quail or grouse hunting, I have always preferred full choke if I couldn't get fullER. For years I had guns backbored and fitted with screw in chokes and lengthened forcing cones and hand loaded nickel plated shot; looking for the tightest long range pattern I could get. As long as you don't try to kill ducks at 20 yards with it, I do not think it is a handicap at all, but an advantage.
I have never been able to call every duck in close, or set decoys to fool every duck. You can't make them come closer than they want to, but letting them get a little farther away just takes a little patience.
I used a full 20 for doves with wonderful success. Part of everyone's favorite set up is confidence, and I just know what I have confidence in.
