If you can put an all day vigil together then you might be able to isolate the best parts of the day.
If your saying there is an abundance of droppings, then this could possibly be a bedding area,
as I find that many piles of droppings in a small vacinity will lead todeer beds close bye??..
Also seeing your picture and how thick it is may work well if the deer want to find seclusion from the elements??..
Get "in early" (after all, it is your handle) and give us a report with pictures of your kill ~pronto!