@KerriC , I get it, it sucks. but shunts suck literally and figuratively haha as far as how much hair they shave, it is not much at all, just a little spot kind above above your ear behind your eye, if that makes any sense haha. hope that helps a bit!
I am sorry you continue to have these issues....may I ask, do you have EDS? If so, what type of dura patch was used for both surgeries? Unfortunately I am not experience with the bolt monitoring....but know someone who may be able to assist you, I will see if she will pop on here to answer you. How is your vision? Please keep in touch to update on your progress.