This may sound strange , but I've had better luck getting to my stand right at the time it starts to get light. There seems to be a window of non-activity between the dark and say 1/2 hour after you can see pretty well.
I always spook deer if I walk in around 1 hour to 30 min. before it starts to get light. I'm only guessing but I think the deer try to move in the dark to bedding if they can. These are the ones I bump/spook.
The next wave of activity is around 1/2 hour after sunrise. I'll be settled by then and waiting.