It's just fun. The ball actually stays fairly centered, just moves up and down. You sort of get in time with it and a hit and if lucky stick it.This looks like perfect practice if you are training for anticipation and target panic.
Shop vac with the hose in the exhaust port works perfect (if a little noisy). Ball is moving up/down a few inches, so it's just as likely to hit it with a hinge/tension release as with a trigger because the ball can more than one ball diameter between the time the release opens and the arrow arrives.Nope, I dont think I can do it with a hinge.