How fast is shallow water blackout method?

[StopPlease]

How fast is the onset of passing out in the method?

 

[kite]

I'm pretty sure this method doesn't really work.

 

[StopPlease]

I'm pretty sure this method doesn't really work.

You sure?

 

[sadworld]

You sure?

I think this method can work because people have died accidentaly by shallow water blackout. I tried it several times and I couldn't bring myself to pass out...

 

[kite]

You sure?

I've read a few threads on it awhile back, and I couldn't find anyone that was having much success. It wouldn't hurt to learn more about it though, good luck

 

[Endeavour]

I don't think it's the easiest and might even not be possible for many people.