I have a 15# Reaction Rip drilled Rev lev. And it is more in the layout that DanH78 describes. I love this ball, because it is extremely strong at the pindeck. Off hits and lite hits just obliterate the pins...regardless. Because the coverstock is a pearl, I have more flexibility with it. It starts up early in the midlane and then just keeeps coming. If the backs are too dry, I can come up the back of the ball and still carry with power. I have a Red Alert drilled similarly, but because of the Pk18 cover, I can only use it on the wet stuff. Great drilling.