again that sucks. Hope nothing is to torn up and a quick recovery is a head.
A harness is a must. I use to be fearless, till one time the base of my climber ended up at the base of the tree which just left me setting 30ft up thinking what the heck just happened. Now I attach before I head up the tree. When I do use my hang on which isn't to often I attach before I step on the stand. Some use a life line.