IMHO, you probably would want the Rival to go under the Gamebreaker because you have a Resurgence to go over it. I'd drill it for length (5 or 6" pin to PAP) and put a little polish on it so that when the GB starts to check to early, the Rival comes into play. Mines drilled with the pin up and between the fingers and the CG in the palm with a little Magic Shine Polish and it's a monster. The problem as my pro shop operator always tells me is that you can't outdrill the dynamics of a ball, so I think no matter what drill, surface, layout, etc you use, they will overlap a little bit. But since the GB is drilled to roll a little earlier, drilling the Rival for length will minimize the overlap.
