When you're edging, especially for hours, how do you decide just when you're going to shoot your load? And where do you shoot it?

love to push it hours and hours til i set a new personal record

If I'm camming with someone, I usually wait until they're ready too, or if I'm showing off on cam4 I try to wait until I have a good crowd begging me to finish. I cum on my belly/chest usually.

i edge to britney spears every day for... until blue balls so bad i have to orgasm

That is my big problem too. While edging you want it so much but at the same time you don't wanna lose your sexual lust. So you prolong the session as long as you can afford it.

i will edge until my cock is ready to sperm and i know i cant hold it back then i let the sperm fly onto a towel i have on the floor

For me it's at a point where any touch on my dick will make me cum...then I just go for it

I don't decide I let my cock decide for me I just keep bringing myself closer and closer to the edge until I'm ready to burstand then after I've slurped up gobs of my precum and when I get to the point that the slightest touch takes me past the point of no return I just let go and shoot my hot juice into my hand

i edge until my gland is so full of seminal fluid that i can pump out a continuous stream of milky juice and sperm by stroking the sweet spot under my balls just above my bumhole.
It feels as if i am cumming as i leak, but there are no contractions. After i half fill a shot glass with milky fluid, i top off the shot glass finish off by stroking my cock to a full, contracting orgasm.

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Same as above for me unless I limited by time, then I have to squirt at a certin time.

When I have my edging sessions I want to be alone. I do it when wife is at work or away on some other activity. This is for my own pleasure
Often I have a time limit to follow, must be finished with it within a few hours.
Before I start the session I found its a good idea to set the timer on my cellphone. It will alarm for example 1 h 17 min from my start.
Then I dont need to decide when to cum during my masturbation, I do it when timer alarms. I can 100 % focus on sexual pleasure and try to keep it constantly on a high level. When its time for it - just let go.

Try it!

Keep on

i shoot into the air, i wank standing up, the decision to shoot is really: i cant stand it anymore, But when wanking with audience on cam4 or camfuze: thats different then it depends on the crowd.
What I hate is timelimits, it has really to explode itself....and to edge to a maximum...