I've been having lots of trouble getting my Boykin to handle. He's finally coming around but he has a real loopy sit. I realize he's a Spaniel and part of the problem is that he's extremely fast. I've tried a rope, I've used the collar but that results in pops, and I've just yelled and dragged him back to the spot. He, or should I say we are getting better but I was wondering if there were any drills I could use. Any suggestions?