A couple of things I've discovered while bowling this summer is:
1. You seem to get tremendous pin action when you match your rev rate to your speed, comparably. That is...don't throw the ball too fast or too slow, but just right according to the amount of revs you put on the ball.
2. Also, varying your axis tilt to suit the volume of oil on the lanes, changes your pin carry and pin action, greatly.
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Duct tape is like 'The Force'. It has a light side and a dark side, but it still holds the universe together.
Some days you're the bug some days you're the windshield.