thanks B hammer, what i find that, the way way walter ray and michael haugen played is much simpler, i read about walter ray wiiams layout, the CG is at the palm and the pin at 1 o'clock. tried to drill my storm fast in a similar fashion and somehow get a similar reaction. Can i know what is a Dual angle layout?
You need your pap, axis tilt, axis rotation, speed, and revs. You then use that data to create two drilling angles which are adjusted depending on what you want the ball to do. By drilling the ball in this manner it is much easier to fine tune the ball reaction for the conditions and what the bowler wants the ball to do. The angles and ratios can be tweaked for the pattern your bowling on, balance holes can be added to reduce or increase ball reaction.
Why this system exists is because bowlers are like snow flakes, and that unless you bowl exactly the same as someone else you won't have the same stats and as such copying their drilling doesn't make sense because it's for their stats not yours.
That being said ball layout is only part of the big picture, and factors such as surface layout are a bigger factor on ball reaction, but not nearly as much as the bowler themselves, if you want a ball to react like WRWJ on TV
then you have to bowl like WRWJ on TV
. Keep your hand behind the ball with little rotation, don't tilt the ball, and try to achieve similar speed and revs.