QSK?... I don't believe it's possible to teach "rat cunning" to anyone during training for the basic qualification. It's a survival instinct that one develops as experience increases. Or at least, hopefully so anyway!
I believe that any school that teaches the basics of instrument flying plus the rules and procedures is doing the right thing. From there on, the newly rated IFR pilot is qualified to learn about it all by himself - or herself. That's the way it's been for everyone I know and is, IMO, the ONLY way that a pilot can develop the instict for self preservation, for survival... the so-called rat cunning.