3 ms·you'd also spend a whole ton of time waiting for players to get on and off the field.by 8note 8y agoyou'd also spend a whole ton of time waiting for players to get on and off the field.dagw 8y agoNot if you do it more like hockey does it.TylerE 8y agoThat’s easy when your playing surface is 6x smaller.dagw 8y agoThere is plenty enough "down" time in football as it is that handling it shouldn't be a problem.gelatocar 8y agoYou could do it like AFL and not stop the game for substitutions.