I just want to interject one thing that hasn't been brought up here yet and that is whether or not to switch completely to Sarge Easter.
I have 3 balls drilled Sarge Easter, one pearl, one with surface, and one benchmark. I use these to help me come up the back of the ball and play straighter stronger rolling lines on the lanes. In my opinion the Sarge Easter drill is not something to be used as your only layout for several reasons. Mainly because of the strain it puts on the tendons in your hand. Even though it may not feel this way you are definitely relying on a lot more muscle mass in your wrist and middle finger. Since your middle finger controls a lot of the movement and tendon use in your hands this can be very hazardous to developing issues in those areas.
Next, Sarge Easter greatly reduces the amount of tilt you can put into a ball. This doesn't mean lowering revs, just lessening of the axis tilt you have. Unless you have extremely large hands or very powerful tendons (again more stress on your hand) then you'll struggle to move inside with these drills to come all the way around the ball. At least for me that is.
I find it's a great layout to use to re-train your hand to stay behind the ball. After switching from Sarge Easter to regular finger tip you'll find yourself revving and controling the tilt and release a heck of a lot more. I use it as a training tool for my muscle memory and not as a replacement for my drillings.
Just some food for thought, I hope this helps!
