when i run 2 together, i usualy have one on the slip lead, and one walking at heel, the one at heal will run the rabbit, then swap over........ when running a young dog thats not quite walking to heel as properly as it should i use the slip lead the same as lamp and battery.
if running diffrent dogs difrent nights , make shure you take them both for a long run just befor you go out lamping, behind the motor is ideal, obviously dont give the one being lamped much. then make shure your mrs is on board to sort out any howling