I don't think the flash spooks them. We got a ton of pictures of a very nice buck last summer, all of them were at night. Only 1 pic of him in the daylight at 630 AM in the middle of July.. June and July was the only time we got picks of him.
All the other pictures we got of him all had the flash go off.Each pic he stuck around to get multiple pics of him.
I am also looking forward to seeing what the IR camera can do. I hope to get that out next weekend.
PS. We still haven't see that big boy since the pics from July 06.