Ive used one for over 10 years and would hunt with nothing else from an elevated tree stand ...nothing worse then to FINALLY get a day off from work and then to get up three hours before day light ...drive 75 miles ...walk to your stand ...set there all day and fight either heat and skeeters or the cold ...spend all the money it takes to hunt ...finally get a nice buck to stumble into your shooting lane and you blow the shot because you misjudged the distance ... yeh pendulum sites are a good way to go!