pre ban i did a lot of day time foxin and in my experience they some times catch them in places that you would find it hard to get to the bottom of a gil or thick bramble. I would expect the dog to be able to deal with his quarry on his own no good the dog waiting for the back up i think there would be to many wasted chances and a dog baying or just hold them for 30 seconds then let go again is no good when using dogs for serous pest control.