Does any one do Rally-O with there dog? Holly's obedience trainer really wants us to do Rally-O. She mentioned it again today. But I don't know if she would be good enough, especially at paying attention and around distractions. And I do get concerned that she will end up doing too much too soon. So if any one does Rally-O, do you have any advice? How old was your dog when you started training and how old when you started competing? And do you do any other sports with your dog?