Here'e the basic techinque for drilling vacu-grips without using Vice's green inserts for the bottom for the hole.
Use 1 1/32 bit instead of the usuall 31/32 bit. Drill down an inch. Change to 31/32 bit, and drill to 1 3/4 inches deep. Use an insert two sizes smaller than your normal size. Glue the insert on the front top, and the bottom of the hole on the back side. You now have a flex-grip with an vacugrip effect.
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Scores are all relative to the scoring pace of the lane condition. This means if everyone and thier brother is striking, you better strike, if no one is stringing strikes, keep the ball in play and make your spares.