Windshield mounted antennas work about as well as those" Through the glass" cell phone antennas... hardly at all. WS antennas are for the most part Horizontally polarized, while your whip type is a vertically polarized unit. All of the broadcast stations use vertical polarization.
Get the longest whip you can find, and don't use an amplifier as that just amplifies the background noise as well. Stay away from any that have a coil half way up the antenna (Also known as a "Signal Enhancer".) the coil may as well be a resistor for all of the good they do.
I have used an 8' CB whip for a truck antenna, and it works like a charm, but you may want something a bit smaller for appearances sake.
I have "Played Radio" for over 40 years, and have been licenesed since 1975. I ran "Radio Tabbasco" from the BEQ Barracks at North Island NAS and before I was caught by the FCC. I had QSL cards from Vancouver B.C. to Cabo San Lucas... All from a converted Marine radio, and a CB antenna.
73.... Smitty W7MAX