Spaniels and Aulstralian Shepards have both been bred as working dogs... so they should have drive to them....
Also, your dogs showed to have the "drive" in them, you just showed them what you wanted them to hunt.....
They werent "trained" to have the drive.... You cant force the dog to hunt no matter how much time and training you put
into it.... it has to WANT TO HUNT!!!!
We are never gonna agree on this are we!!