I know many of you have seen them and they offer them for just about every vehicle as a replacement to OEM antennae. My question is not if they are better than some stock whip antennas but if they would do more good backwards instead of forward facing because of surface area that faces the wind. This link has the picture. Mind you some designs are thicker because they have to house an antenna base.
http://www.visualgarage.com/Ebay/Sha.../Fin_Cad_1.jpg