Hello,
I discovered the tourniquet method in the five last acts books and was immediately seduced by it: little materials required, unconsciousness happening quickly, no pain or discomfort, and from what I understand very efficient (it is even a high risk of accidental death in wrestling with choke-holds - or, sadly, with black people being killed during arrests in the US...).
So I tried to practice it, using a long scarf and a wooden spoon, but all I could obtain was this unpleasant swelling sensation in the head, due to insufficient strength of compression, compressing only the veins and not the arteries. Applying more pressure seemed impossible, and very painful, especially because it applied a lot of pressure on my Adam's apple, and I was nowhere near unconsciousness at any point. I don't know if it is my morphology or something else, there seem to be very little space between my Adam's apple and my jaw bone, but the recommendation of applying the rope above the Adam's apple was not for me. I was very disappointed and frustrated.
But yesterday I tried something else: put my scarf below my Adam's apple. And suddenly everything worked like a charm ! I was able to apply a lot of pressure, without feeling any discomfort (breathing without problem, no pain anywhere). When applying this amount of pressure, in a couple of seconds I felt an intense dizziness growing in me, with no swelling of the head at all. So I'm pretty sure I was able to cut the oxygen supply to my brain, and if I had continued, I would have passed out (I passed out a few times in my life, and it felt exactly the same). As I'm totally chicken-hearted, I did not pursue further, but I will definitely practice again this way, try to actually pass out in a way that when I do I let go of the spoon, to see if I can fight the survival instinct (probably the hardest part). But I have the feeling that it could be very quick, a matter of a few seconds. With the wooden spoon blocked by my shoulder, there is no way it can move afterwards, so that seems extremely promising to me.
I'm posting this here mainly because I did not see such information anywhere else, I hope you will find it useful/interesting, and I would also be happy to hear if anyone else tried that, and whether it is something that works only with me, or also for other people.