Wow, thanks for all the ideas. We had one in Junior. He chased it for maybe 15-20 minutes before the judges asked me to call him in... it was very, very active and would dive, and then pop out another 10-15 yards, he would chase again, lather-rinse-repeat, until he was about 250 yards out. The judges were super kind and let him re-run the mark since he put up a good hunt. He stuck his head under a few times to go after it but he just couldn't quite get there fact enough. And, it was a nightmare trying to call him off of it because he could see it, and really wanted it. I think he probably would have kept going after it until he was exhausted and drowned.
I was just thinking if it happened again at a SH or MH test, we would not expect the same level of forgiveness. Unfortunately, I don't hunt... and I think it really leaves a variety of "scenarios" that my dog never gets to see because of it... so I try to think about these types of things and plan in advance. In general, I know that I don't get enough live flyers for him (probably couldn't hit the broad side of a barn myself!), so I specifically try to work on what I think might be difficult concepts that I can set up. I like the idea of shackled ducks... can someone elaborate on how you apply the zip tie? I'm having trouble visualizing it... like around the body so the wings are trapped to the body or behind the back, so they can still flap?