Bob,
Personally I have used a man-cage on the end of a crane hook before today and will continue to.
Crane operators are very clued-up people unlike some of the labourers that drive fork-lifts here.
How many fork-lift drivers can you name that recognise common hand signals?.
All crane operators here are required to know hand signals, as are people working near a crane.
Don't forget your hard-hat. [Linked Image]