Body Language
Whether or not you use hand signals to call your dog, the physical picture you present to him when you call him, and when he gets to you, can have a major influence on the success of your recall training program.
Hand Signals
All of the hand signals that you teach your dog should be visible from a distance, but this is of particular importance with your recall signal, because your dog is more likely to be some distance from you. One to try, and that is instinctive for most people, is a big sweeping motion of your right hand, starting out at your right side and then sweeping in front of your body, with your hand landing on your chest. In the teaching phase, keep the leash in your hand as your hand is sweeping in front of your body to help draw your dog in.
Play the name game with your signal for a week to start (obviously, your dog has to be able to see you give the signal before you give him the treat). After that, or in slightly more distracting training venues, call your dog's name to get his attention, then give your signal, and follow immediately by a verbal command (if he knows it), and enforce the command with leash help, if needed.
Posture Counts
Your body posture during the recall is important, too. You want to present a welcoming rather than intimidating picture to your dog, but you don't necessarily want to have to squat to get your dog to come to you for the next fifteen years. If you have a shy dog, you may want to turn your side toward your dog when you call instead of facing him, but for most dogs, a relaxed, completely upright posture works just fine. When your dog comes to you, keep your hand(s), with your treats, close to your body, so he has to come all the way to you to get them. Keep your hands in the middle of your body and raise them slightly as he gets to you to lure him into an automatic sit. If you have a small dog, squat, rather than bending over, to give the treats. Big or small, most dogs will actually be pushed away, rather than drawn closer, if you bend over to meet them.

