Originally Posted by baphometh
For myself I just know how my bowl can contain and how much coal it will last. When I get a new bowl I just experiment, trying more or less coal, then when I trash my shisha I can see how much is left.
Usually when the taste become less present you know you are coming to the end. You will also notice less clouding.
I think you misunderstood the question lol. Im not asking when is your bowl done. I'm asking when do YOU personally stop smoking after a session.