One method I've been contemplating is full suspension. When researching photos I've often seen hangman's nooses used but members on this forum seem to call for slip knots. I'm genuinely curious as to why. I have made a hangman's for practice and it seems like it would be sturdy enough if I used it on a tree branch near the woods in my neighborhood. If a slip knot is a better option I'd really love to know why. I've read the hanging mega thread but it's full of different and in some ways contradictory info. Thanks guys/girls in advance
Hanging megathread is indeed confusing because people discuss partial and full without specifying. I've given up in that thread.
It's not about sturdiness but how well it will close. A hangman's noose will constrict around your neck but not as well as a slipknot from everything I have read. A hangman's noose was used in execution hangings when the person would drop a significant height (e.g 6 feet). It's designed to be sturdy to break the neck. Very few people are able to do suicide by such a long drop hanging.
Suicidal hangings usually rely on the rope tightening around the neck as much as possible to cut off blood supply to the brain and the airway.
Everything I have read makes me understand the hangman's noose does not tighten as quickly and efficiently as a slipknot.