Create two lines 30 yards apart. Players (the minnows) line up on
one line with a ball in their stick. The coach or another player
(the sharks) waits in the middle of the field.
Game - On
coaches whistle or signal, all players run to the opposite line
while cradling their balls. The sharks try to check the balls away
as players run by. If a player’s ball is dropped, they become a
shark. Once all the players reach the other side, clear away dead
balls and repeat. Play until there are one or two players left. They
become aliens first in the next game.