I'm intrigued by Pilot_DAR's ability to get a C152 back from 400 feet. When I've tried cutting the power at 60 knots in the climb (at 4000 feet) I took 500 feet just to turn round. I did try a range of bank angles, though wasn't exhaustive. I have no intention of turning back from 400 feet, but would be fascinated to know how you do it?!
I've also wondered why it is that we are discouraged so strongly from taking in the flaps if we've misjudged the angle of descent? Provided we have a decent airspeed, it seems to me the main risk is of overloading the pilot (need to retrim, etc).