Ok this post is way late but i had to go ahead and have my say. Gary Erickson is one of the most talented men i've seen with dogs. I've attended two of his stock dog clinics and the amount of knowledge gained has improved not only my skills as a handler but there's a pretty awesome four legged hired man here in the Nebraska Sandhills. The amount of work a good dog can save is well worth the cost of his clinics. A good dog has a good handler. The border collie I have is a grandson of Gary's old dog.
However I've spend 4 days around Hanging Tree Cowdogs and i'll keep my border collie.
Last i knew Gary was based out of Oklahoma.