i try to get in a half an hour or more before light heck one day i fell asleep for 40 minutes and it was still dark when i woke up.
So i see more in the early hours of morning.
I think as already said some people are lazy get up late and end up in there stand to late in the day.
One day i got up late and spooked a nice deer 10 yards from my stand when i went in just after light.