The big odd green shape I've included in the diagram is what we call "the vortex". Its a place where two odors converge, creating a challenge for dogs to sort out. While it was simple for Gimme, the other dogs found it much more difficult. Gimme made it look so easy I didn't even realize there was converging odor until I watched the other dogs. This was made a bit more challenging because source odors were effectively at the same height - I don't know if it was the same or two different odors. The wheel well hide was higher, but scent from it was forced lower by the body of the van. The other dogs spent all this time going back and forth and round and round in the vortex area and their handlers weren't experienced enough to recognize the issue and move them out of there. Gimme went in the area briefly at the beginning of her search, but didn't stay there.
The stated idea was - if the dog wasn't allowed to go back to a hide they missed, then they would realize they were missing out on an opportunity to earn reward and would search more carefully the next time around. There were seven dogs in class and for the four slower ones, this seemed to work out. There is one moderate speed dog and she did a little better. All of these dogs slowed down even more than their normally slower (and moderate speed).
For the two faster dogs (Gimme and August, GSD), there was no real change-improvement. I think for this process to work, the dog actually has to realize there were other hides there and thus, there were rewards they were missing out on. From Gimme's demeanor, I am certain she believed she'd found all the hides out there.
From my perspective, I don't feel like we learned anything in this class. The vehicle search was so easy and presented no challenge to Gimme, though it does add to her experience bank. The way the two glass rack searches were set up, I don't think Gimme learned anything from them. She never knew there were other hides to find, so has no reason to alter her search style. Left to our own devices, I would have handled the search differently and I know she would have found them all.
For me, this was frustrating and the first time I've been disappointed by class. It probably feels worse because we ended the morning (tracking) on a frustrating note. On the other hand - - - Gimme is so talented and experienced, it only makes sense to find she'll learn less and less, eh...