I put this on my bow about a month ago tentatively to try it out. I actually love the system. As long as you put your arrow on and rotate it to where you want it, the orientation stays fine. There is a mark on the knock for that purpose as well. The best part is that the ball will adjust for any torque on the string (where the regular knocks will torque with the string). I find the arrows actually fly straighter (see the NAP website for an explanation on how that happens) too. I guess the real test will come in a little over a month when I can try it out for real.