Rockwell as a Puppy. He's much bigger now at 85 lbs. Rocky is an aggressive mix who likes to walk on a leash and/or a no-pull harness but he still pulls - well - aggressively. I'm asking the very wise and knowledgeable FReeper community what he needs. Is there a no-pull harness that really works? I'm told a choke collar is not good, so I haven't tried that.I dread the day when an unleashed dog appears as Rockwell will not tolerate any encounter and will react with force. I carry Pepper Spray for such a possibility and am even considering...