Perhaps Corey is referring to the ball being approved by USBC for use. The Blast Zone, Sidewinder, and even the new Fury Pearl were all approved in June so you'd be safe.
The Fury drilled as you mentioned should be a great choice for heavier oil. For the short pattern I would suggest polishing the poop out of the Rampage so it will get down the lane way long before it turns, OR, taking the shine off your Sidewinder (maybe 1000 abralon) so the backend movement is more controlled. Much depends on the amount of head oil on the short pattern as to which ball will hit and carry best. For example, the PBA Cheetah pattern is short at 35 feet, but the first 10 feet of lane are soaked with a high concentration of oil so you get more "skid" than you'd expect at first.
Good luck in August.
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notclay
Lane Carter, Strike Zone Pro Shops - Salt Lake City, Utah
"The problem is no that there are problems. The problem is expecting otherwise and thinking that having problems is a problem." ~ Theodore Rubin
Edited on 7/29/2007 7:30 PM