Thanks Manda. I have thought about that also. Do you use a retractable leash or just a long one? I don't have one but I'm thinking of going tonight to pick one up. My one concern with the retractable is that they are not very strong... Duncan once broke his collar right off his neck trying to chase a squirrel when he was on Jack's tie-out. Now he has to have a metal buckle triple nylon weave collar rather than the plastic buckle. I worry that if he is on a retractable lead, he will break it if he strains against it too hard.
I'll go pick up one of the long leads tonight at PetCo and we will start asap!

Amy, I read somewhere that you should never practice the commands unless you can reinforce them. Duncan does come to me and he has "This Way" down so well, he will stop on a dime and turn around. BUT, I noticed this morning when Jack came with us on our daily walk that Duncan will not always "come" when Jack is there. Jack was never trained the come command and will only come if he feels like it. Duncan must see him get away with it and thinks he can too. It makes me feel like I'm going backwards in my training with Duncan.