It all depends on the situation since I live at home.
With friends hit it whenever the piece gets to me. When we smoke togather its always in a safe place so no need to worry.
Shower stealth smoking I can and will finish a bowl really quick.
When I go for walks through the woods on my own I take my time and hit it let my lungs cool and hit it again, maybe power hit enjoy the scereny between hits listen to nature and make sure I am alone. get up walk around find a new spot pack another bowl, until saisfied.
When I sneek out a night to toke I like to do it fast. I will take more time then shower smoking and enjoy it but I won't dilydaily between hits then come back inside. With all but the shower smoking I will normally wait 10-20 minutes between bowls.