Drilling Pattens

Question
Hi Warren, I've enjoyed reading all the advice, from all the different experts. Please forgive me if this question has already been asked. Why are there so many philosophies concerning drilling patterns.  Morich & Brunswick follow a dual angle pattern with Mo's leaning more toward above the finger pins. Hammer/Columbia/Ebonite lean toward the old fashion legnth btwn pin-pap & MB-pap, with a mixure of pins below or above fingers.
Storm adds length from pin to VAL.
I'm looking for an all conditions, all style type pattern.
I have a 4 x 1/8 up PAP, avg 15 mph, with avg rev (Tweener).
Morich's allpurpose layout looks similar to Hammers Skid/Flip layout. Hammers' all purpose layout looks like Morich's light oil layout. Hence my confusion.

Answer
Rudy,
Mo Pinnel developed the Dual Angle layout technique. It can be used on any bowling ball.

The location of the pin, mass bias and the center of gravity all can be manipulated to create the best combination of core, cover and bowlers skills.

Every player potentially can throw the ball differently. If you look at a pin above the ring finger layout, for you the pin to positive axis might be 4 inches, while a player with more forward roll might have a PAP at 5 3/4, now the pin is close to 6 inches from their PAP. A player with different axis tilt might have a 4 1/2 horizontal axis co-ordinate but the vertical co-ordinate might be up 2 inches. In the last case the pin to PAP might be less than three inches. Reaction would differ for the three players, while their ball layouts would look identical.  

If I put the pin to PAP at 4 inches for you and 4 inches for our first example player (5 3/4 horizontal co-ordinate), your layout will look like the first example (pin above the ring finger) while the second example would have the pin down and right of the ring finger.

Different balls are meant to do a variety of things. If you put a strong layout in three high performance balls from different companies (with similar cover characteristics), the three balls would perform similarly. Put a strong layout in a high performance ball, performance ball and entry level ball (with similar cover characteristics), the balls would roll differently, while the layout is encouraging similar reactions in all three balls, each ball has progressively less core dynamics, thus less potential for hook.

The all purpose layout for you should reflect your rev rate, ball speed, axis tilt and axis rotation. Some info about the lane condition and lanes you bowl on would also be helpful. If you roll the ball 12 mph the entry level ball might be all you'll need, but throw the same ball 20 mph and the mild ball will skid like crazy and need very dry lanes for it to work.

Skills, ball strength and layout benefits all come into play to create the optimum ball reaction.
Then the optimum ball reaction may only work for you on freshly conditioned wood lanes, because synthetic lanes have less texture and later friction. EVERYTHING is RELATIVE.

Don't lock into what a layout looks like. The actual positioning of the pin, and mass bias (and potential weight hole) will look different for all three of the player examples I've used, if we drilled a 45 degree drill angle - 4 inch pin - 45 degree vertical axis angle layout for each.

Knowing what you do and what you need the ball to do is the basis, but ball strength might dictate a weaker (or stronger) layout to achieve what you want. Thanks for your questions. I hope I didn't throw more at you than you are looking for. Good luck.