Anyone have any opinion on Border Collies and Zip lines? My backyard isn't fenced and we have a zip line for Missy, but I make sure she doesn't use it - when I'm in charge/home. When I'm not home, my parent's use it to get her good and tired... My mom says, "She gets tired in 5 mins (really?), then lays down on the veranda watching things in the yard." My first impression of the zipline was, "she gets more and more wired!" My mom said, "she used to get a wild look in her eyes, but not anymore." Well, my personal opinion is this: if she is allowed on the zip line and I ask her to do something (ie. sit - we used it in the past...), she ignored what I said, 'cause she was too busy running back and forth, most likely chasing things out of the yard... which I want to put a stop to. I don't want the "chasing/barking behaviour" in the yard to be all she thinks about when I'm out there with her... should I use the zipline to get rid of her excess energy? Or should I train her out there with her GL on to start with until she gets more focused on me? She doesn't play fetch in the backyard much which means she doesn't get tired in my backyard - unless she's on the zip line which is when she runs full out. The only time she gets tired is at the park playing fetch and doing obedience... I hope this makes sense. Any tips would be appreciated. Thanks for your help in advance!