Other factors for Shallow Water Blackout?

[BoredomSeeker]

I'm not sure if this makes much sense, but would it be easier to pass out if you are for example dehydrated? Or are there any other things that could make it easier to pass out, beyond hyperventilation and willpower?

 

[Charlie-Bravo]

So Plan B for me is SWB. I will use Alcohol(wiskey) to suppress my SI. I don't think there is more that you could do, since you need quite some strengh to hyperventilate for 10 minutes straight(so no sleeping pill that make you fall unconscious faster) .

If I fail on the bathtub I might go out to a lake and swim(hyperventilate on shore, jump in, hold breath) so I can "distract" my SI by diving around.

 

[GreenBanana23]

So Plan B for me is SWB. I will use Alcohol(wiskey) to suppress my SI. I don't think there is more that you could do, since you need quite some strengh to hyperventilate for 10 minutes straight(so no sleeping pill that make you fall unconscious faster) .

If I fail on the bathtub I might go out to a lake and swim(hyperventilate on shore, jump in, hold breath) so I can "distract" my SI by diving around.

This is a really good idea.
Heres a little anecdote copy paste from a reply i made to another SWB forum post about my own experience that backs up your ideas:

unless you are 100% certain and determined, you will most certainly cancel your plan. You will be hyperventilating and then you will feel numbness. Either you will cancel or be more determined. How do I know? I started recording myself to leave behind. Yes a huge amount of appeal to this method is that it looks like an accident, however, I was doing this in a bathtub. I WAS going to be found and for my life situation it would have been best to leave SOMETHING. I was watching myself, honest to God, thinking about how it was some of my last moments and what people would see. Why did I turn back? The bathtub wasn't filled enough yet and the numbness in my toes was scary and the possibility of failure felt too high. I have never had a real near death experience, so maybe those who have overdosed or died and been resuscitated will have no fear or consider turning back. I have never faced a failed attempt and never want to. I was institutionalized weeks ago because I blabber mouthed about how I was getting a shotgun, because I couldn't have just let myself figure it out myself whether or not I wanted to CTB. Now I have no method that can just be done without risk of survival. I don't have any poisons or the willpower to hang myself. I cannot do any of it because I refuse to be institutionalized again and i refuse to live severely impaired with a higher difficulty CTBing. After i changed my mind I went and took a shot of liquor. I have been writing this all after that moment.
TLDR: Have a really really good reason to CTB if you're using this method or any other method where you are capable of turning back. Be truly strong and truly suicidal.

 

[Charlie-Bravo]

Yes, I think the main problem is that it lacks a point of no return. Like if you jump down a bridge you "only" have to jump, just seconds you need to trick your SI, after that SI can do whatever it wants, your dead(if height is sufficient)