I too was going to bring up NotWal's point/analogy of defensive driving. Sure normal driving lessons don't give you let you experience a little crash, but normal driving lessons are stupid.
How many 18 year olds get their licence, are on the roads, and have hit the brakes really, really hard? None of them. Think about that. They have never even felt the ABS kick in. They've never, ever swerved. They know the rules but not how to drive.
A defensive driving course will teach you that "one day you may/will be in a dangerous situation, here's how to deal with it. Let's practice so it is (as much as possible)
muscle memory". Skid pans for over/understeer, braking hard through witches hats and plenty more. I'm amazed it is not compulsory.
so what do you do when you are teaching kids?
stick them under the sail and put them off things forever?
Maybe they'll be like FlickySpinny and it will never, ever happen to them. What do you think? How is she going to react when it happens and she is completely taken by surprise, shocked, and out of your reach?
I said shallow water but I like the more obvious idea of dry land now. Just five minutes to say to a loved one "If you are stuck and drowning, it is probably this. Reach down to the hook and do this". Call me crazy.