Considering the use of the long throw-in danger from Kilmarnock, can this be thwarted by a player standing on the touchline, where the thrower is running to? It's obviously a long run-up and it would be very difficult for the thrower to stop his momentum without running into the defender on the touchline. At the very least it would be a distraction for the thrower. I don't think there's anything in the laws of the game to prevent this tactic.