I don't like them.
No more silly clickers and cookies that don't work!
Yeah. Okay, because in agility, we beat our dogs into submission and then force them to do the obstacles Plus, this guy uses and promotes negative reinforcement. He calls it a "tap on the shoulder". I call it unnecessary force. JMO.

For what it's worth, you might want to contact some SF SPCA Academy graduates living in AZ and apprentice under them:
http://www.sfspca.org/academy/referr...ml#other_state