ProjectEuropa,
If you are attempting to suspend someone, there is an excellent yahoo group called AdultRopeArt that has a tremendous amount af information. The pictures are beautiful! Suspension is not something that should be done without a great deal of forethought as damage could easily be done to your model. From what I've read, most of the weight-bearing should be done from the waist or hips. But I urge you to read more and be overly careful. Just my humble opinion.