private email. Consider doing the drill that I suggested. I have done single and team takedowns and defenses of completely darkened 3 story office buildings. Pointing a light, whether on a gun or in a hand telegraphs where you are looking. As for light spill, try the drill that I suggested. If at that point you learn for yourself by actually testing having a. a light on the gun, b. a led light tossed in a room and c. an led light on a chain around your neck. I did my drills at Boeing Aircraft in Long Beach, CA. in a three story abandoned office building with dividers, furniture, and obstacles.