Got any tips for leash training a dog?

[Coyote_Bandit]

7. Get a Gentle Leader collar

It has a flat nylon collar that buckles behind the ears and an adjustable loop that fits over the snout. It is not a muzzle and the dog can still eat and drink and bark and bite while wearing the collar. The leash clips under the snout into the adjustable loop. These kinds of collars are sometimes referred to as forging collars. Unlike choke collars or pinch cllars they put pressure on the dogs snout when he tries to pull against the leash and forge ahead. In many dogs, pressure to the snout is more effective than pressure to the throat. You also have the advantage of having some control over the dogs head - and field of vision.

Use a 6 foot lead. The dog probably doesn't know what to expect of the retractable lead given that he may have more or less freedom at any given time.

I've trained a young small terrier mix to heel off lead using nothing but the Gentle Leader collar. This particular dog was a small muscular dog that did not respond at all to a choke collar or prong collar.