zigga,
Balls, lift them up and plant the lizzard down between them when doing BTC.
Skin stretch comes with the territory BTC. You have to stretch some skin — it’s the first limiting factor. But you don’t want it too uncomfortable, so pull some of it back towards the base before completely tightening the hanger. I found the right stretch, yielding results without really vicious stretchmarks, is on the verge of a grin initially but I’d get used to it quickly in the session.
Scrotum stretch. Yes, I believe I have a little more sack now than before I started hanging. It crept up the shaft with the base skin. Nip and tuck I guess… No it’s not disturbing, really. No aestethic regrets.
Just a hint of coldness, numbness and discoloration after a 20 min session is OK, I dare say that, but really only a hint of it.
Signs of those conditions after just 10 min is positively a bad thing, and indicates that the weight attempted is too high (for you, at this point), and/or the hanger placement is bad and/or quite possibly too tight or too loose, and/or you’re using too much wrapping.
Keep trying things out with less weight. Personally, I learned to hang with my Bib using 1.75kg.