Popping is not necessarily a disqualification in retriever Hunt Tests and Field Trials, but it's at least a minor fault, and it certainly doesn't improve the dog's score. In the case of field trials, it could cost you a position in the final placements. In either venue, especially if combined with other issues, it could knock the dog out of an event.
However, training a dog not to pop is difficult, even for experienced field trainers using traditional methods, much less someone like me, both relatively inexperienced and using positive training methods for which no book or video exists.
I think part of the problem is that we're not really sure why a particular dog pops, and it might vary from dog to dog and from incident to incident. But the other problem is that even if we correctly guess the reason for a particular dog and particular scenario, it may not be easy to see how to counter-condition it. I've heard of people trying many methods without success, and the same applies to me.
Yesterday, a fellow trainer with an all-age field dog whose popping had become so frequent that he had decided to retire her, told me that he'd recently learned of an approach that he was having great success with: Hide from the dog after sending her. That way, if she looks back for help, no one is there to help her, and she receives no reinforcement for popping. Ideally, after a few tries, the unreinforced behavior extinguishes. But my friend is not sure yet how well her new anti-popping training will stand up in competition.
Meanwhile, over the last few months, I've begun trying to consistently use another approach: At the instant Laddie pops, I call out "sit". Then I walk out to him, slip on his lead, gently walk him back to the start line, and send him again. I've never seen him pop a second time when I do that, whether the bird is re-thrown or not. Still, I'm not sure whether this method will ever get rid of the first pop of the session. It hasn't yet, though fortunately many sessions have no pops in them these days, thank goodness.
At yesterday's session, I noticed something else, however. On the one mark where Laddie popped, the most difficult of the day, the throw was invisible during most of its flight, and only appeared for a split second just before it landed. It was also a 250+ yard mark with lots of hills and bales of hay in the picture, so while I knew exactly where to look and still didn't see it for most of its arc, Laddie might not have seen the flight of the bumper at all. (We were throwing a bumper to a bird, because the thrown bird was even more invisible.)
This has led me to wonder whether a common thread in Laddie's popping is confusion, and a common thread in confusion is not seeing the throw. I'm not saying that that explains all popping, but it might explain some of it, and optimistically, a side effect of fixing it might even be to cause other popping to become less likely as well, on the theory that confidence begets more confidence.
Following from that analysis, it seems that a fairly straight-forward drill can be used to help the dog learn to deal with that particular kind of confusion and thus, hopefully, popping in that situation. Assuming the dog has a good memory and is otherwise a good marker with good hunting skills, simply have the thrower fake the throw to a pre-positioned article. Everything else is normal: the duck call (if you're training for Hunt Tests), the gunshot, the throwing motion, the thrower taking a seat after the "throw". Then you as the handler line your dog up and send him as if nothing unusual were involved. When the dog gets out there, hunting if necessary, and finds that lo and behold an article is out there right where the thrower seemed to have been aiming his fake throw, you've just added reinforcement history to the dog's behavior of running to a fall even though he never saw the throw, and you've added to the dog's confidence that he can handle such a situation without popping, that is, without asking for help.
I guess it goes without saying that the Fake Throw drill can be run with incremental levels of difficulty. At the easy end of the scale, for initial training, the mark would be fairly short and simple, the gunner would stay out rather than retiring, and the the mark would be thrown as a single. At the difficult end of the scale, you'd use a fake throw on a long mark that would be difficult anyway because of obstacles, wind, and diversions, you'd have the gunner retire, and you'd include the mark as part of an otherwise difficult triple. In fact, you could even fake two or three of the throws in such a triple, not just one. When the dog has worked up to the point where he can consistently run such a triple without popping, even though some hunting might be required, you may have eliminated a significant share of the dog's potential for popping.
What about if the dog does pop in this drill? Well, in some of my other experiments, I've actually wanted Laddie to pop occasionally so that he could learn that it doesn't do him any good. For the Fake Throw drill, I don't see any advantage in that. Rather, I would say that if the dog pops, it means you've increased the difficulty too quickly and should scale back your subsequent setups accordingly, working back to that level of difficulty again eventually, but more gradually.
I've found that when Laddie hopes he's going the right direction, for example after a cast on a blind, but isn't yet certain, and then he suddenly finds the bird or bumper, it seems to add even more to his already over-the-top motivation. Perhaps the Fake Drill works the same way, and is actually a fun drill for the dog, in much the same way as people -- at least some people -- enjoy surprises. Fixing a problem (we hope), while making the game even more fun for the dog, is a great combination.
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