Don't bother with stretching or weight-hanging. These two techniques are said to lengthen the penis, and in some cases they do. But the longer it gets, the thinner it gets; both methods cause the penis to lose girth as it stretches out. The only time to use a penis stretcher is after having surgery, when it's necessary to prevent the accumulation of scar tissue.
Take the head of your dick in hand (if you have a foreskin than pull this back so it does not get in the way, remember you are pulling the penis NOT the skin). Then stretch it out directly in front of you, holding it for 10-15 seconds. You should be able to feel the stretch at the base of your penis. Repeat the action 4 or 5 times. After that, relax penile and massage the head to restore normal circulation now, take penile firmly in your hand and pull the penis to the right. Pull it to the right until you can feel a pressure on the left side of your penis.
Lengthening the penis. The most common procedure is to cut the ligament that connects the penis to the pelvic bone. This allows a little more of the shaft -- on average less than an inch -- to become visible outside the body. It's not really lengthening the penis so much as revealing more of what's usually hidden. To prevent the ligament from reattaching, a guy would need weights or stretching devices daily for about six months.