The vibes store their energy for the back end, overall hook is not really about how many boards a ball will cover, but how many boards the ball will cover in oil.
An aggressive oil ball will burn up and not cover as many boards as a weaker ball on dry lanes because it will store energy for the back end, but the aggressive oil ball will out hook the weaker ball on heavy oil.
I saw Bill O'Neil throw the Onyx this past weekend on the Chameleon pattern and I would say it is not much of a dry lane ball and is more for medium oil and should be a great benchmark type ball because it should fit smack in the middle of
Hammer's line up.