Partial hanging questions. As well as an additional method question.

[Earlgrey177]

Hello, I'm considering partial hanging, not full sus, due to rumors that after I'm unconscious my body would thrash around and I don't want to highten my chances of being discovered. My questions are, what knot should I tie? I'm using standered Paracord rope, is that fine? I've heard discussion on knot placement like placing it in front of your neck, side, back, what's the difference between these? What do they accomplish? Context, ive tried partial sus with knot on the back and didn't work. Suggestions. Also might seem a bit gross, but I'm considering getting a chisel placing it on the back of my neck and falling back, in theory it should sever my spinal cord, thoughts? This is a last resort.