1) They are often foul throws (but that's a geenral thing, refs MUST have been told to be more lax as some of them are HIDEOUS but never penalised)
2) When we HAVE a throw-in we never make anything from it, nobody moves, the opponents always mark us up tight, there is clearly no "plan" and 9 times out of 10 we immediately lose possession
3) On the contrary, if our opponents get a throw, we very rarely mark up or apply any pressure and we VERY rarely regain possession from i
It's a minor one, but a throw-in is essentially a "set piece" from a dead ball. This is a significant advantage in the game, where possession is so key but we VERY rarely use them effectively and it annoys the hell out of me!