yep another vote for Madstad. 11' will work fine for your height.

I originally had the tall shield with the vent. It did not work for me or my wife. The vent didn't help IMO and bugs would cycle around in a vortex and always land on the wife or my lap..not good if she doesn't like or in my case is allergic to wasps.

The Madstad allows you to move the outter windshield about 3 inches of travel up or down and angles in or out to allow as much or no air through to the driver or passenger.
the best solution for all driving conditions