I don't have the time or energy to really get into a post, as I have to go to work. I just have to say that Purdue, you absolutely sicken me. I remember when you were so concerned about Sly when he was living with your neighbor and spending most of the time in a crate and I gave you advice on how to get him to come live with you. I was under the impression he was headed for a better life, not one where he get the sh*t whapped out of him at every turn. You took an undersocialized dog and started beating on him for behaviors that you never bothered to try and correct before hand, or take into a account that he hadn't properly rasied!! YOU HAVE A FSCKING AUSSIE, there is not a reason on this EARTH you should be hitting him, except that you are young and inexperienced and oh so willing so get sucked into this jackhole's justification of abuse. God, even the old school Kohler style trainer I first apprenticed under would wet her pants in disbelief at what you are doing to your PET DOG. And she trains in Schutz, SAR, competes in agility, conformation, obedience and everything else. She trained the military dogs down at Lackland Airforce Base for fsck's sake...can your caveman of a trainer claim anything like that? NO...because he's too afraid to take his dogs around his peers and their "pansy" competitions, because he knows exactly what is going to get said about him and he's right.
I almost ruined my dog by training him the way you're training Sly and it's taken a lot of work to get him back to being happy, excited and willing to work. You are blind to the difference between "I want to work!" and "Please please see my calming, appeasement signals because I DON'T WANT TO GET BEAT!" Do some reading, go to shows, other competitions and frigging talk to other people.
You are not training your dog for military work, Schutz or anything else that could be tossed up as justification for whaling on an Aussie.