Originally Posted by cghipp
In my experience, it definitely makes a difference. Just because it hasn't affected you, LuckyR, that doesn't mean it won't affect someone else.
If it isn't common sense and you don't believe me, perhaps www.racquetresearch.com
knows more than either of us...
The Effect of String Damping Gadgets
Damping doo-dads on the strings damp only residual string bed vibration, and do not really protect the arm by damping frame vibration. Adding more mass to the head in the form of a damping gadget is a bad idea because it increases r in the formulas and therefore worsens performance, so the damper should be light. Pete Sampras' string damper is just a cable grommet, and Andre Agassi uses a rubber band.