When it's nice out, I like to take the dogs rollerblading. It's a workout for me and it wears them out...some. Problem is, they both like to run FAR apart from eachother and far from me. I'm constantly fighting to keep them close enough so the leashes aren't at full tention. The other problem is Milo tries to run after ever ball, kid, bike, noise, leaf, etc. I'm working on correcting that with a pinch collar and constant corrections...but I'm at a loss with the leash tention issue.