Thanks I'll do it.I'd take him out with just other 1 dog for awhile. Let him learn to brace up by bracebox. Don't over power him with to many pack mates. Try to brace him with a dog with the same running speed if possible. When running them together, be sure to ignore him if he comes back to you while the other is running. Don't say a word to him. Sooner or later he'll learn it's more fun running with his brace mate than standing around you not getting attention.