If you have access to the January 2004 issue of Bowling This Month, on page 43 Mo Pinel describes a layout that gives a kind of hook and set reaction that he says works great on synthetic lanes, lanes with carrydown, and lanes with a sport condition. Basically, the CG is kicked out and below mid-line, and a balance hole is between the CG and the VAL, also below mid-line. No experience with this layout yet, but I'm having an Unleashed re-drilled (thumb only) that has this exact layout, and which I hope will solve the synthetic carrydown problems that my local house has.