For my ball to strike, my ball need to go in a straight line to
near the centre of Pin 1, then at the last 1-2 feet back-up lightly
into the 1,3 pocket. Then no need to see, 90% strike. For more info
I recomment go to yahoo search for "bowling spinner style". You
will see a clip on the "helicopter strike". Notice how the ball
spin against the 1 then 3 pins causing the pins sweep into the
stack while the ball get out of the way to maximise pin
actions.
I develop another loafing release that cause my ball to spin but no
back-up. This style seldom result in strike, if hit directly centre
will result in a 7,10 even a greek church split . I used this
release to get spare.