I would need to here more on why you can't go first light but, from what you say alot of deer are still moving even during archery season after first light due to hunters moving.if you are archery hunting hunt hard during the seeking of the rut and you will see bucks moving looking for doe's.a lot of deer are shot during gun season when hunters come out of the woods to eat something for lunch and come back in.I would suggest use the later time going into the woods to your advantage and bring a nap sack or something and stay in the woods at the time when other hunters are moving deer.