Re: Gentle Leader
Koda sounds exactly like Darwin :P. Same age, same walking deal! We started using the gentle leader too, and it has helped us, or, mostly my shoulder. When he does pull though, I stop moving, and call him back to me - praise when he does so, and continue moving again. He is definitely more manageable with it.
One thing I found when we started using it, was that it rubbed some of the hair off his nose. We waited for it to heal mostly, then I bought moleskin and applied it to the part that rests on his nose. That has helped a lot!