Do you have a regular lead? I usually put it on them and let them run around with it on, supervised, of course. Let him get used to the feel first. Then I use bait or squeeky toy and lead them around just briefly. If you have an older dog that is a pro on a lead, take both of them for a short walk together. The puppy will learn from the older dog. Always make it short and fun!! Then do "pretend" shows at home. Lead him in a big circle, then stack him on the table. Let a neighbor or friend (man & woman) check his bite, testicles and go over his body. Have someone gait a dog in front of you and then behind you. After the pup has some practive with the regular lead, then change to the kindness lead.
Hope that helps!
