After testing these out quite a bit, I find that I'm not getting anywhere near good signal. I can't hit the local repeater through the mobile setup, however, I can hit it just fine with my HT.
As far as grounding and ground planes go, does the lip mount need to be grounded, or is it already grounded just by touching the hood? Same with ground plane, do I need to do anything special with either of these antennas or do they not need ground planes? I'm still confused when it comes to antennas.