I have a sedan and want to place my V1 as high as possible to the upper edge of the windshield (above RVM) so the car or LEO can't see the unit from behind. But the V1's rear line of sight is not perfect as my car's rear roof line is slightly downward sloping. If I place it lower (parallel to RVM), the V1 will get a much better rear line of sight but at the same time anyone behind can see it. Which position do you like better? Thanks!