Another pendulum that is good, is Vital Bow Gear. They make the Camelback pendulum. I have one and like it a lot. It is real easy to use, very bright, and has a locking feature on it.

They say to sight it in at 25 yards, flat level ground, and then set it and forget it. From then on, you'll be dead on accurate from 5 yards to {maybe} 30 yards - depending on bow speed.

Butch A.