They are perfectly quiet. Thats not even an issue. (at least the high quality ones). Single pin for hunting is great. They have a nice, uncluttered, and simple sight window. I think they work best if you have a fairly fast bow and shoots pretty flat. ( light arrow ) ( I shoot 70 lbs. and 360 grain arrow, 288 fps) They also are good if you keep your shots under 30 yards. You can shoot more but after 30 yards arrows typically start to drop quite abit. In a hunting situation, you can't count on adjusting your pin to the yardage in time. So, I set mine up and hunt with it at 20 yards. 10 yards is right on, 20 yards is right on, 25 yards aim about 1" high and at 30 yards aim 3" high. You learn this quickly when practicing. I practice out to 50 yards but still limit my hunting range to 30. (Your bow will be close but different) For 3D they're great because you have time to adjust it.

A couple good adjustable sites are: HHA Optimizer Lite ( which I have) and the Impact Archery Cosmic Air Lite. These are both really good units.

Good Luck!

PRACTICE....PRACTICE....PRACTICE......SUCCESS!