I have just moved to a new studio and it has a block and tackle for lifting heavy weights. I could see what was going through the head of my friend when she saw it. I thought easy. Then I thought hanging someone up could prove dangerous. Like all activities, its not the obvious things that go wrong where you can see the potential danger in advance but the dangers which aren't obvious.

Let me add, this is not for me. It's for a photo session that is going to take place in my studio and if anything goes wrong I'm going to feel responsible for allowing it.