Olive, You should be using a neck yoke with a drop pole. If you don't, the weight of the pole pulls the ponies together at the front. The length (measured from attachment points) of the yoke is the same as the measurment of the distance between mounting points of the single trees. With a proper length neck yoke, you may only want a single caribiner (or short, heavy strap) between yoke and collar. Don _________________________________________________________ To Unsubscribe, change to Digest or Vacation mode go to: http://www.drivingpairs.com/dpmem.html `````````````````````````````````````````````````````````