Wrap your penis shaft, then place one Velcro tie so that ends of pipe are touching, or very close to it. Place wrapped portion of penis into the 'V' and attach the other Velcro cable tie. If you wrap it close to your penis, you can slide it outward to tighten the grip if necessary.
A very effective weight is a five-pound ankle weight that has removable 8-ounce weights. Drape it or wrap it around the pipes. By shifting the weight away from your body, you increase the leverage and the amount of pull.