We are supposed to have 3 minutes of warmup time, but the judges both days cut us off at 2:30. You can see though, a little bit of the strategy for proofing against drop & shake off. The behavior sequence is flipped so instead of fetch ... then deliver, it looks more like deliver ... then fetch. A clean delivery is rewarded with an immediate happy toss into the water. The one bad delivery, of the float line, has the consequence of a 3 second LRS (when I turn my back on her). I cue her to deliver again and that delivery is of course clean because she's not wet, but the next toss goes up into the sand, not quite so reinforcing as the wet toss. If we'd had another 30 seconds, the next toss would have been into the water. Fortunately the one bad delivery was just enough to tune her up for the actual test.
The very first time I did this, I set Emma up for success by putting her on a stay at the water's edge, holding the dummy, and then called her to me for the first clean delivery. She then gave me about a half dozen drop & shake-off deliveries. Then when she finally gave me one good wet delivery, it was one after another, over a dozen clean wet deliveries in a row. PREMACK RULES!!!!!
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