On the Internet I heard some people using this technique for
sparing. By taking their ring finger out of the hole. Apparently,
it kills hook and is a way to throw straight with a reactive ball
(besides end-over-end roll). Do any of you pros use/recommend this
style? What are its advantages and disadvantages? Thanks.
From Wikipedia:
To cut down the hook for spares, some bowlers eliminate the ring
finger, and grip the ball with just the middle finger and thumb,
causing the release to have less lift; professional bowlers Gary
Dickinson and Walter Ray Williams, Jr. perfected this
technique.
http://www.youtube.com/watch?v=sd1w_tD-97w