Cannons are a three ball shot from a corner spot or on the one yard line.
Usually one ball has been Roqueted behind a one yard line ball and must then touch the other on being measured in. The Roqueted ball must be placed in position for the Croquet shot and not moved again. Balls meant to touch must indeed, touch. Aim mallet between No 6 hoop and peg. Practice the force to move croqueted ball to Pioneer 2.