OK. What's the difference between a yoke and a tongue? I'm talking about a spring loaded pole, with a swivel tongue/yoke, which you connect to the breast collar by snap shackle. Most of the marathon carriages with a pole, usually come with a yoke/tongue only wide enough to be attached to the off-center 'D' ring. Is there anyone that uses that arrangement with a longer yoke/tongue, which is equal distance to the distance between the center of both single trees? Don, how do you attach the collar to the yoke? With straps? Snap Shackles? Is your yoke made of wood or metal? Helen