I never used a pendulum sight. I cant really respond about pendulums. But can say that I only hunt from treestands, and never had a problem with my fixed sights, I never heard of bending at the waist either. I just shoot however possible. Never seem to have any problem with accuracy. I only also shoot one pin that is good from 10-30yds, an inch high at 20, dead on at 25 and an inch low at 30. I have no need for a pendulum.