Quoted from wtatumjr:
I'm a little confused about the PKE skill shot. I guess you choose P,K, or E and try aim for the lane that is lit. Later on if you have 2 lanes lit do you aim for the unlit lane?
Before plunging the ball, you select one of the three lanes with your flipper buttons. You then try to soft plunge the ball into that lit lane (you cannot change it once you plunge). If you make the shot, you will receive the corresponding reward, the most lucrative of these being the lit playfield multipliers.
During normal play, you want to use your flipper buttons so that the ball goes into an unlit lane. Every time you complete all three lanes, it increases your end of ball bonus x. This can be worth a ton of points after a long ball, especially if your bonus is held.