I used a clicker and a chain to train him to heel. When I said heel, i made sure to tug on the chain a little bit and have him walk towards my left or right side, then I'd click the clicker and give him a treat and lots of praise. It works, I still use the chock chain just in case he desides to chase a bird and wants to pull me, lol. He's done that once or twice before. He sit automatically when we're going to cross the street, I make sure he does, so he doesnt walk ahead of in-coming traffic in the neighborhood or anywhere else where there's traffic.
The chain and the clicker worked for me. Plus lots of treats and praise of course.
