There is a lot of confusion about what ground planes are and what actually constitutes a ground plane. But remember every antenna system needs some sort of ground system to properly operate. This part of the antenna system can make a big difference in the performance of your entire system.
All antennas must have an image for the antenna to work against. So, you must first consider what type antenna configuration you are using then evaluate where it is being mounted.
Please contact Skywave Antennas Inc. Engineering to help you with this Complex choice.