So before hand, I have already suggested not to do this. But he wants another opinion to see if I have good enough reason not to do this... So here we go.
A client I am dealing with wants to make a few ladders out of spare pipe he normally cheese boroughs. His thoughts are to hang two 8' vertical pipes with 3 rungs holding 50 pounds each. And the rigging involved would be 1/4" aircraft cable. one point on each side of the very top rung of the ladder. All of this cheese boroughed together with three moving heads on the 3 rungs. It should also be noted that hardware is old and a mixture of rusted or chinese.