This is the easiest way to explain Spot Bowling to the new bowler. The spot where the student stands to begin the approach is the Rear Sight, the dot, at the foul line, over which the ball is delivered, is the Front Sight, the Dart over which the ball rolls is the Target. The beginner will understand when it is explained that when lined up correctly, they deliver the ball correctly and it rolls over the Target Spot, the ball will hit the desired pin. When the pin is other than the Head Pin, adjustment is made on the Rear Sight only. This is referred to as the Straight Line Approach.
Timing is coordination, which is the movement of the arm with the movement of the feet.
Correct timing can only be attained by consistent and intelligent practice. To scatter the pins best, the ball should strike in the pocket on either side of the headpin - ideally, one half of the ball with half of the headpin. This will change the point of impact just enough so they will no longer hit the headpin right on centre. If this fails, move them to the left or right which changes the angle, the ball will strike the headpin. Reverse procedure for Left Side misses.