I do a lot of camping with my cat.We night sail all the time.There is a three sevens rule for lighting with a flashlight only.Seven meters, seven knots and I can't remember the last one.The way the lighting works is you sail dark and keep your eyes open for other boats.when you see one near you, shine your light at them to get their attention then shine it on your sails until they have past.I sail with my jib rolled up to help increase my forward visibilty.Theres nothing like a star filled night sail!