Handsome boy! To get results almost immediately go to your nearest pet store and purchase a PetSafe Deluxe Easy Walk Harness in the appropriate size for your dog. This harness hooks the lead in the front (chest) of the dog and the lead comes up on the side that you are training your dog to heal by, in most cases off your left side.The Easy Walk Harness gently discourages your dog from pulling on the leash. When your dog pulls, the harness steers your dog to the side and redirects his attention toward you. The harness rests across your dog's chest instead of his throat, so there's no choking or gagging. The Easy Walk Harness is perfect for everything from teaching your dog to heel during daily walks to keeping your dog under control at the vet or dog park.
Run, don't walk to your nearest pet store and buy this harness. No need to put your dog on a "short" lead, tug on them or choke them. Your dog will be walking on a loose leash almost from the first five minutes. It will make your life and your dogs life and training much better i guarantee it. From this relaxed teaching method you can better move on to teach the verbal "heel" command with much less stress on your dog. He will learn much faster as a result of it.
And as far as using an electronic collar in this process, yes, by all means you can use one, but NOT until your dog has mastered the command using only positive reinforcement. Make sure you never use an E collar to TEACH a command, only use it when you are sure that your dog knows the command.
https://www.petsafe.net/support/coll...y-walk-harness