yesterday we started teaching a concept of short (less than 10 yds) wipe out marks. We threw a long single maybe 150-200 and then two wipe out marks in the decoys 10-20ft from the line. Dogs handled it pretty well, a few wanted to pick up the first wipe out and then run long. had to whistle stop and pick up 2nd wipeout and then pick up long bird. They all pinned the long single. Plan is to incorporate this over the next few days to where we are throwing doubles and triples in the field and having 2-3 or even 4 wipeout birds up close to the line. teaching them to count. I feel like this is a classic scenario in most hunts when you have a group of ducks come in. 2-3 fall right in front of the blind and one or two further out. Also in SRS events a lot. Thoughts?