The ACU Archery S.O.S. Hunter Elite is a tuned-mass damper designed to remove excess vibrations/sight picture movement out of your shot while you aim and execute. 
This device uses the same technology that has been developed to stabilize skyscrapers against wind turbulence and earthquakes, medical devices used for surgery, and even in F1 cars for a short time before being deemed too much of an advantage for the racers.
Just like no two buildings are the same, no two bows or shooters are the same either.  This means that finding the perfect spot for your S.O.S. is going to take some time and testing to find the exact location that gives you your best aim.
We have found a few common mounting locations that work as great balance points to help you get started. The Hunter Elite can mount on the front or rear of your riser, and on either side depending on your dexterity. This means you have the ability to find the mounting position that brings the most benefit to your balance while negating pin float. 

 The S.O.S. Hunter Elite package includes the following:

• One S.O.S. Wire Unit
• One Mounting Bracket
• One Quick Disconnect Mount
• Various cap-head and button-head bolts for attachment options
• For set up instructions click here