For the area I hunt, 85% of the dogs come in before the 10 min mark, 10% come in between 10 and 20 min and the remaining 5% after 20 minutes. I have worked some in that took up to a hour but I knew they were there. My stands usually are 15 to 20 min. If you have a lot of sets to make in a day you will want to play the averages, if only a few sets then stay as long as you want. This may not hold true for westside hunting.