Clean Run had an article on the impact on the joints with running vs 2o2o. I'll need to look back through them to be 100% sure, but I believe the 2o2o was said to be harder on their joints. Think about what a heavier, fast dog is doing to its' joints as it flies up over the top of the aframe, and slams hard into a 2o2o. That's a lot of stress put on the joints
This is what I've always heard, too, and that the impact is especially hard on the A-frame because of the more extreme angle. Also, it's why we're trying to keep a running contact on the frame. I can almost keep up with a single running contact and we're making progress on lateral distance at the contacts so that helps, too.
Several of the 20" and 22" BCs that we train with use a 4-on-the-floor at the frame instead of 2o2o. Older, slower handlers like me, need the stops. LOL.
: my back lane! It's plowed, so there is not deep snow, not much traffic and if there is, I can move into the garage while they pass! It's perfect for now. I'm sooooo excited. I know it's freezing out here, but my two are used to it and if we warm up and then do a cool down, they will be fine. We walk in -40 weather and they run and play all the time, so this will be nothing 5 minutes here and there. 


