On a related subject. I penalised a GK at the weekend for picking up a ball that was kicked to him. I was shouting, 'DON'T pick it up', but I genuinely accepted that the GK was only hearing 'pick it up'. I certainly won't use that phrase again because of the potential for mishearing. Begs the question, how does everyone else communicate this banana skin with a GK, or are you inclined to say nothing at all and let the GK decide?
I've always assumed you shouldn't tell the keeper anything because it sounds like you're coaching him. It looks like I'm in the minority. Is it ok to tell the keeper in advance what your decision would be?