Seeing as how you guys are talking about CB's, I will add my two cents. When I travel alone, (without my wife, because she can't stand the noise from the CB), I always take one of my CB's, mostly to listen to the truckers and to find out about road conditions ahead, on the Interstates.
Years ago, I used to use very high quality antennas. My favorate was the externally wound, top loaded, quarter wave antenna. (Grounded to the car, for a "ground plane", the quarter wave antenna becomes the needed half wave antenna). The last few years, because I only use the CB when on a trip (alone), I started to use a magnetic mount, center loaded antenna, on the roof or on the trunk. Works great, and I can both hear the truckers and talk with them from a good distance. Well, I found that with the Genesis, when the center load magnetic mount is on the trunk, the coax that leads over the weather strip on the trunk lip would not seal very good, and in the rain, I would get water in the trunk. Hmmmmmmm. What to do!!!!!
OK, I tried an experiment. A magnetic mount antenna still needs to be located on metal in order to work correctly, so......... I made a "ground plane" out of an old thick coat hanger, let the magnetic mount connect to the coat hanger wire, and placed the whole thing in the trunk, with the antenna sitting vertical and the wire crossing the width of the trunk. IT WORKED. My receive is as good as it ever was, and I never had problems talking with truckers on the transmit. Sure, the signal has to go through the metal of the trunk, but its not like I'm talking 15 miles away, but I do have a transmit of more than 5 miles, and a receive of 10 to 15 miles.
I keep the CB itself either on the passenger seat, or on the console, plugged into the power outlet (cigarette plug). When I park on the road, I don't have to remove the antenna and I just disconnect the coax from the CB, unplug and place in the trunk, or even just cover it with a towel.
At night, like 3am or 4am, I can get a distance of over 20 miles, but I very seldom use it to just bat the breeze.
Works for me.