Attacking Throw-Ins

[Rekobeto]

In my approach to this set-piece I'm very strict, only leaving two people in the box and one lurking outside, in theory. While in the match, my Center Back and midfielders all stay in the box, only leaving two whole wolly fullbacks home, against three oppositions. It's nothing I can do, as I've instructed five players to stay back, but three of them have forgotten their duties and gone forward.

Is this something anyone else have noticed?

And when on the subject, how far up, is an attacking throw-in?