A more subtle way of time wasting (in evidence a few times yesterday) is for a player (often the goalie) to try to take a free kick twenty yards up the park from where it should be taken. The ref will either let it go, which will be an advantage in itself, or as often as not wave the player back the stolen yards. If the player is cute enough finding the right blade of grass to take the kick will add on many a good few seconds.