Having the light on isn't the issue. Having the the center of the beam cross over your targets eyes is the issue. I try to only use the halo until I am ready to shoot. And in NJ since we can only use shotguns st night you are better off with a flood type light when you are ready to shoot. I use a focusable head lamp when shotgunning. I may have a hand held scanning the field and when I think I have convinced the critter to close the gap I will shut it off and turn on the head lamp. I wear it kicked off to the left side of my head because when you shoulder your gun the light needs to be running down your bead. You can also use a gun mounted light with a shotgun but it gets tiring having to swing the damn gun around.