Jim Logajan wrote
Demonstration of unpowered 180 degree turnback to the takeoff airfield
from altitudes as low as 200 ft was required of my fixed wing student
pilot training curriculum. I've done it in a real aircraft.
My experience was not rare, either. All the CFIs I've flown with have
done it.

Sure.....in a Sailplane with a 30:1 glide ratio,
Sure-as-hell not in a Cessna or Piper with a 9:1 glide.

Bob Moore
ATP CFIing since 1970