RE: Calling it quits?
The longer the better! If you can stick it out in a stand all day do it. Your results will be better. If there are deer in that area you will have a better chance to see them, by staying put and still longer you will not disturd anything like we do when coming back into the stand from the morning hunts.
I don't do this all of the time but, I will get back into my stand before late after noon. If I get out of my stand and 10:30-11:00am, I am back in it by 1pm.
This as worked out great in the past, as the other members are coming back into the woods at 3-4pm you will see the deer scattering some times, running or moving right by your stand, BANG!
Good luck!
KEEP HUNTING THE GREAT OUTDOORS & GOD ALIVE, PASS IT ON!