Rules to play Broomball
USA Broomball uses the floating blue line concept. That is, once an attacking player has crossed the blue line in the offensive zone, the red line now becomes the designated off sides line. Essentially, the blue line disappears as the off sides marker. The ball must completely clear the blue line before the players shoes and no other attacking player can be in the zone before the ball in order for the attacking team to be considered on sides.