X1 is the drill starter,X2, 3, etc in line at center ice on knees. X1 skates to center ice and picks up a puck, skates in for a shot. After X1 picks up puck, X2 gets up and backchecks. When X1 shoots, X2 stops and returns to get a puck, drill continues.

Tags: Perpetual drill, , backchecking, , shooting