Petty rant incoming. I know its mandatory to keep your arm raised until it touches another player/goes out and it's in the LOTG but why are us refs forced to keep our arm upright for such a ridiculous period of time? There are absolutely no obvious reasons (well, to me) why this is done? It's blindingly obvious when the ball is in play, this annoying prolonged signal seems to have no proper function than to confuse players.