here is the thing SD
I have done this
went from 15 to 14 ( due to elbow injury )
I stayed at 14's for the better part of a year
this is what I found
at first, your timing will be messed up, and you will want to throw / roll the ball even harder and faster ( at least this is what I did ), and in so doing this it messed up my timing
by zooming the ball downlane I often went straight through the break point and would come in heavy w/ lots of crappy leaves i.e. deflection
when I got used to the lighter weight, and rolled the ball normally, what I found was increased accuracy, more revs, no arm pain, and outstanding carry.
what dictates carry ( most times ) is entry angle, what a lighter ball allows you to do is be able to control it more, thus being able to dictate entry angle.
when you can slow down, get the ball into it's proper roll, the drive and hit will be there, and as you continue to evolve w/ the lighter weight, you can manipulate your line to the pocket more easily.
I had no problems scoring w/ 14's, and I know several other who can shoot the light's out w/ the 14's
it's not for everybody, but it's at least worth a try if you are considering it.
I have since moved back up to 15, but I keep a couple 14's around just in case I have to revert back
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