How would you manage additional time? If there were an injury would you tell the manager to change his piece of paper to, for example, 11:13. If one team started to waste time to the extent that you felt time should be added, how would you manage that?Well if i sin binned a player at 11am i would write 11:10 on the piece of paper, manager checks his watch and calls me over at 11:10.
I can certainly imagine a scenario where one team has a player in the sin bin and all of a sudden they are injured in every tackle, can't decide who should take throw-ins etc etc.