check your parks and wildlife website for your state on requirements, probably red and green nav light on bow, and white anchor light on stern 18" higher than nav lights and visible from 360*, best bet would be clamp on style. i used flush mount receptacles and slide in poles for mine. as for a FF, i'm getting the humminbird 565 soon, my research has shown it's the best buy for the money. don't waste your money on anything less than that, i've got a 90 dollar one and it is only good for seeing the bottom.