I used to hot rod my bows. They were double cam bows, which I still shoot. I could get about 12 fps over stock. I accomplished this with the use of string buttons (which also help as string silencers) and by pre loading the limbs slightly. I twisted up the strings and the cables, maintaining the poundage and draw length, while shortening the axel to axel length. I shortened the A to A length from 1/4" to no more than 1/2". I'm not sure how this works on a single cam bow. In order to do this, you must certainly know what you're doing and have access to a bow press and chronograph. For the two cam bow I used 7 eliminator buttons on each end of the bow. I tested anywhere form 2 to 12 buttons. 7 worked the best for me. The bow like them to be positioned very close to the cams. The closer to the center of the string that you move the buttons, the slower it will shoot. I also had a short serving and tied my nock points on the string. No heavy brass crimp on nock points. Tied in my peep with no rubber band also. Keep your string light. Good luck.