I think you would want the hole on the left side of the VAL. More toward your grip.
According to Brunswick, closer to the grip center to reduce flare, and past the Val for more flare as described below. Although I would prefer to clean that up by saying closer to the primary pin from your PAP for less flare (going alone a line drawn from your PAP to the Pin), and further away from your PAP for more flare. My understanding is that as your drill the hole closer to the pin, you take out material from the top of the core, and make the core shorter and fatter, thus less differential and hook. Going past your PAP would be drilling more from the center of the core, increasing the differential and the track flare.
"Brunswick is recommending a simplified one-hole size/ two-hole position technique that covers the vast majority of ball reaction changes that can be accomplished by drilling an X-hole.
Use a 1" drill bit, 3" deep, to both increase or decrease track flare
Note: Larger and deeper X-holes result only in slightly greater increases or decreases in track flare. The one-hole size technique has the added advantage of avoiding problems with illegal static weights. As long as the ball was originally laid out with at least 3/4 oz of positive side weight and a small amount of finger/thumb weight, the 1" X 3" hole using either of Brunswick's recommended X-hole positions will keep you out of static weight trouble.
Brunswick recommends using a position 2 1/4" past the bowlers axis to increase flare, and using a position 2 1/4" back toward the pin to decrease flare. Using the line connecting the bowlers "axis" and the "pin" as reference line (see Diagram). The X-holes should be on or slightly below the reference line (holes on the line will sometimes drop the narrow point of the track and cause the track to flare over the finger holes)."
