I only use one if I just flat out can't see a thing.

I'd rather make a little more noise in the dark and have them wonder what it was than have the flashlight on and remove all doubt.

The red is an option...I don't think that's nearly as intrusive and I was very surprised to see some animals on film didn't even realize the red light was on them??

Course...I ain't ever killed a big buck either so I'm just talking here