five finger grip?

Question
I am an older bowler who has trouble bowling many games or longer tournaments.   I now roll 14 # equipment but have weak hands, weak wrist, some arthritis in fingers.
Any advise on a five finger grip?
Is it ever used?
What do you think of this?

Answer
The five finger frip is sometimes used.  Although it can make the ball easier to hold on to, it makes it more difficult to create any ball roll.  I would suggest to add a hole for the pinky and see if that will help enough.  With that added, you can still create some side rotation.

Good luck,
Chip