I have found that alot of deer here in PA are infact nocturnal... weekend warriors are a huge issue. guys go out tromping around pushing any animal that moves...
scent control is a big factor, but on the otherhand I have personally taken 3 bucks with a lit cigarette in my hand....
i think movement is key (I hunt more urban areas) versus scent...
I have best results weekdays versus friday and saturday...