I shoot a cobra slide sight that is also a pendulum,and I love it because I can shoot from the ground and have different pin settings,currently out to 50 yards also when I'm in the tree I use it as apendulum and good out to 30 yards or if need be I could lock it in and simply slide the marker to my 50 yard setting.the pin is also very gright and holds light in low light conditions.It is very easy to adjust and makes absolutly no noise whateever.