players in all four corners
coaches with pucks.
on Whistle X1 and X2 skate hard down the boards,
Coach hits one of them with a pass.
X1 and X2 go 2 on 0 for shot on goal.
On the shot, (or whistle) X4 and X3 start from opposite corner and recieve pass from coach.
X1 and X2 now backcheck hard to catch them.
Players should switch sides to recieve and pass on forehand and backhand