Where exactly do you place your fingers? I'm a male, I think my neck is about average size, probably thinner than average male. and I'm having a really difficult time making myself black out.
Another thing, if the carotid artery is such a hard to reach sweet spot, wouldn't the body's normal response of involuntary thrashing have a chance to throw the precise rope placement off? Seems like a risk. Correct me if I'm wrong.
What I did was, I made a heart using both of my hands, and placed them so that my neck was in between the two halves with thumbs ready to apply pressure.
Not my neck btw, but similar to mine in a way. Red is where I think the carotids are, & black is where I applied pressure with my thumbs. I managed to black out 2 times, both above & below the Adams apple. I held my breath while doing this, to keep steady pressure. If I put pressure way too low on the neck, I would end up coughing. Also, check your surroundings & make sure you fall in front, or behind something that will cushion your fall, if you do pass out. I hit my face against a wall accidentally, but luckily I didn't get injured.
Yeah, I'm afraid of pressure being released once convulsions begin too, so I ended up choosing full suspension now. You're right in a way that the placement may be off during an attempt. Just have to get lucky imo. It is much harder to pass out using something other than your hands too, but in my last partial attempt, I almost passed out using a bathrobe belt below adams apple.