I live in a state where one cannot mount a GPS to the front windshield and have done so for years and have not been stopped. However, after reading this thread, I ordered a dash mount from Rand McNally that will be $8.00 when I include tax and shipping. (I have their GoodSam GPS.)I know some others have said that that might still not fully comply, but it is so cheap I am going to give it a try.
http://store.randmcnally.com/gps-dash-mount-disc.html
I vaguely remember that this dash mount may have been included with their GPS but cannot find it ...