Double plays-Flips or Throws is a simple drill used to refine and reinforce the flip or throw call to 2B.  It also allows for practice repetition throws from 2B to 1B and 1B to home.  

Coach hits balls to SS Right forcing player away from 2B creating the must throw scenario.

Coach hits next ball to SS left creating the flip to 2B scenario.

Repeat.
Coach Reyes.