You are correct about physics and anatomy. Yes, I have to understand it much more clear than in usual rigging. Although it is very interesting and gives rewarding emotions when this or that suspension (especially difficult one) come out successfully. Yes, not all suspensions are successful, because all girls are different in many ways. For example, some of them allow upside down suspensions, while some does not.

And about rigging – usually I rig models standing on the floor or on the chair, and after that I suspend them, tying one leg and then another.