I've just discovered Auto-Lap by Position and really like it. However, I'm wondering if I can only use this when exclusively doing loops? Commonly, I go on rides and then in the middle of the ride we start doing loops to practice on sprinting and pace line positioning. Will the Edge 530 automatically pick up that we are doing loops and start recording laps automatically once we arrive to where we are doing loops? If not, is there a way in the middle of the ride to start recording laps manually?