Rings of flare....no. The only way to tell the amount of revs you have is to video tape yourself bowling, with a camera you can play frame by frame, but before you bowl, you have to put tape, in a color that contrasts your ball alot, so you can see it, over your fingers, and on your PAP. After you record yourself, you also have to time how long it takes for the ball to get to the pins. Then you watch the video frame by frame, and see how many times the ball spins from the point of release, to the time it hits the pins, and you have to know how long it takes for it to REACH the pins, on contact with the pins you stop timing. After you know all this, you come on this site and ask someone how many revs you have. lol. thats all I know, wish I could help you more.
--------------------
16 years and still going strong! 16 years old that is! The names Warrior Princess, Xena..Warrior Princess
And why would I "saw" pins in half, THATS A WASTE OF PINS!