Well, bar gigs around here tend to run 3 sets, an hour on, half an hour off...

I've started doing 2 hours on, 1 hour off, 1 one hour on and that's the end... for which I keep my watch on my belt... an occasional quick glance down just to see how things are going (It's ALWAYS later than I thought it was gonna be) and well, if the glance down offends anyone, they have yet to make it known... and even if they did, tough...