Bar wrap hair tie bondage technique and tutorial
articles and tutorials bondage techniques How to tie a crotchrope

When you have a Victim with mid ( to middle back ) the long hair ( to the waist ) length hair, when doing a body or chest harness, you can do a bar wrap to restrain the hair.( And head from rotating forward )
Step 1: Do some kind of mid - body harness such as a Shin-Ju (chest Harness), or Karada (body Harness) or other mid-body restraint,
Step 2: Start creating a bar wrap. You will need rope that is going vertically up the middle of that back. ( The bra straps from the chest harness will work here, or by picking 2 diamonds in a body harness and wrapping the tails around them will give you want you need)

Step 3: When you ready to bar wrap up the vertical rope, pull the hair over the vertical rope.
Step 4: Wrap the tails around the vertical rope and hair.
Step 5: Repeat step 4 as many times as needed.
Step 6: Finish the bar wrap by tying off the ends with a square knot or half hitch wherever possible.