Re: head lamps?
I fish at night all the time. I don't use a head lamp, but I carry two flashlights. A thumbnail sized single LED on a zinger in a pocket, in my vest and a mini-mag on a cord around my neck.
The last thing you want is to walk around with a light on, alerting the fish to your presence and ruining your night vision.
When you need to check your fly or fix a tangle, turn around, exit the water if possible, and use the smallest amount of illumination to do the job, a red lense with help to save your night vision.
When it's time to go, use the larger light to find your way.
You could use a head lamp if that's convenient for you, for for me it would be it the way for the majority of the night
The simpler the outfit, the more skill it takes to manage it, and the more pleasure one gets in his achievements.” --- Horace Kephart