I read that not being able to remember the last 10 minutes or where you have just been is a good RC (can't remember who said it - maybe I'm dreaming!), so perhaps when you asked your mother and said you couldn't remember, that was your best RC. I've only ever managed to do the nose plug RC once in an LD, so I'm can't really help you on effective RCs, although I suppose you could try writing down some text and see if it changes?