Gladly, but I'll preface it by saying this is not my own research. Upon receiving my mount I installed my antenna and then headed to CB Exchange in Mesa, AZ to get my SWR tuned. The owner, though impressed with the quality of my mount, was quick to point out that CB antennas function best when mounted "high and dead center". He rambled on and on about grounding planes, and how metal underneath the antenna serves as a runway for the signal.
Example; if you have the antenna mounted on the left rear corner of your truck (like I do), then the radio signal will be strongest out of the front right corner of the vehicle. However, the radio signal will strongly suffer out of the direct rear, right rear and left rear.
So while the mount positions the antenna in a very aesthetically pleasing manner, it does very little to provide us with the strongest possible signal.