I have to disagree Decoys seem to increase the odds for us as. The ducks do actually land in them. Confidence decoys and just a few regular ones seem to do the trick. A mojo duck never hurts.
My little one killed her first water bottle last week in 5. The gun was a little long for her and we have a shorter 410 with recoil this week. We are going to try to let one land for her first duck. She is to inexperienced to try to get one on the wing. She may dispatch any that I do not fold :) She has been going with me since she was about 4.