I don't use a P7, but a lowly L2D. In dim light (overcast, poor weather, late dawn, early dusk) I use in flash mode.

I am careful when stopped behind other vehicles that I don't aim it in mirrors or in a way it will get in eyes of someone ahead of or to the side of me. Usually when fully stopped the handlebar will turn left/right and light ends up angling down to left/right on the ground where I can see the flash.