well ms journey mom , I know the dog , know the line so very very well --- no one even asked 'what is the decoy doing' . I am sure that Journey focuses on the decoy as long as he is active . I know that this dog has high prey and I also know that this dog has a strong fight drive , not defense or fear driven, in fact it took a bit of stimulation in the beginning to find her (high) threshold and get her out of the game -- so not a defensive approach with retreat or flight in the cards. Yet this dog is as clear as clear can be . Had same experience with Kilo, same with Simon and Chunko , same with LeRoy, same with Kohl, same with and even Linda Shaw's Timmy who was a "my"/american show mix .
You've had those real experiences in your orchard and saw the dog in real action -- yet totally responsive to you.
Do you want to see the dog as friend and playmate to the decoy? or do you want to see the decoy just as that , a provocation - as long as he is a "good boy" she will be totally neutral to him. Not friend. Neutral . We did so much of this kind of training in French ring and especially in Campagne when all the French experts came over .
If your decoy dilutes his actions - so will the dog . He ramps it up so will the dog . Rkiv in Oklahoma Max Prisons , previously RCMP , just sprang to mind - I can not fathom him prancing around and bringing the chair he has just ripped out of some cons flailing hands back to him to "let's play some more" . Yet , again , Rkiv you could take absolutely everywhere and you would never know the dog was anything outside a very fit , obedient GSD . (he lived in a home , in a community )
craddling is to let the dog feel you are not competing for the prize , makes them "know" you and you them. You can have her at your side and just stroke her calmly down her side while holding the prize. If you are working her nearby I will show you.