Any reviews of these? A local trainer offers a control unleashed class based on the book/exercises, and I'm really thinking of getting Johann enrolled in the next class. He is great onleash, but has no future as an off leash rally/obedience dog or agility because he Just Does Not Listen. Another one I saw is "When Pigs Fly: Training Sucess with Impossible dogs". I can't tell if this one is more pet dog/manners based instead of competition focused. Any feedback on either book?