Thanks, I will try it! This takes practice, for sure. I think I will try it without the therapy ball for now. At my gym they have things you can put the ball in that stabilizes it - but if I am practicing there I will just use the TRX and if I happen to lose my grip I am only a foot or so from a rubber mat.

They also have these really big robust band thingies that they use for assisted pull-ups. I've been told it would probably work for me but with my ankle flexibility problem I am afraid to trust myself to what is basically a really large rubber band...sort of kind of.