I did it wednesday, new year's eve...got in my climbing stand, nothing till 10:15, then a NICE eight point came out, but I could see more deer behind him afraid to come out.
so I waited for the 8 point to give the "all clear, come on out boys and girls" so I could see the other deer, but instead he started puttin his nose up in the air sniffin, yep, I'm busted he didn't look right at me but he knew something was up, turned around and took all the deer through the thick stuff around me.
stayed till dark, nothin.
I have done 8, 9, 10 hours a few times, but I think that was the first full dark to dark set.