I have a hard time sitting still for long periods of time, so when I plan on doing more than one stand/set it would be 30 minutes max... When I can only do one stand I may sit longer 40-45 minutes. I have had a few coyotes come in after the 40 minute mark (not sure why they came in after such a long period of time-maybe they just arrived into the area or curiosity finally got the better of them-not really sure)... but most of my stands are about 20-25 minutes... I will force myself to stay longer if I am only doing one set. Most of the coyotes I have shot have come in relatively early, between 5-7 minute mark, some less then a minute, many much later but the majority, around the 5-7 minute mark... So the setup, playing the wind, being quiet on the way in-sitting comfortable=no movement before you actually start calling is very important because those coyotes might only be a hundred yds away.