I doubt your going to find many cases on failed full suspension attempts. Besides the beam or whatever other fixture point breaking. Someone interrupting you. Rope breaking. Theirs not much of a reason to fail.
That being said. I can certainly see how someone could make some miscalculations. *coughs* Like I did. I had a 3 foot drop below me. Quicked out chair. And even though I didn't think their was that much slack. Apparently their was. And apparently cotton rope stretches way more than I could of imagined. especially, with the full weight of my body. I ended uup with my toes on the floor. I did have knot on the back of my neck. And I try to place the rope on my carotid arteries.
I thought screw it. I just have to pull through the pain. The choking. The pressure in my head. The agonizing pain of my neck. It's just pain, I can get through this I thought. But I wasn't passing out. I wasn't getting blurred vision. I just remained choking. Felt like someone was stepping on my windpipe. And eventually after a couple of minutes, I just couldn't take the pain anymore. Plus, it was pointless since I wasn't passing out.
At least from that, I learned three important things. Pretighten noose around neck as much as possible. So it's less likely to move from the position you put it. Even though you think have hae little slack, s in distance from noose around your neck, to fixture point, even if you think you have very little, make sure theirs as little slack as possible. even if it's more difficult to get your head inside the noose. Or if not I'd almost say to put the noose around neck first, and then attaching to fixture. So theirs even less slack. The less elasticity your rope has, the better. I ordered me some static climbing rope this time. Which ihas only 3 percent elasticity.
So, even though I failed. And was left with some bad ass neck pain. I should of done a better job with my set up. Hanging is extremely simple and effective. But it's important to pay attention to little details.
P. S. I still find it crazy how much stretch that cotton rope had.