After weeks of tinkering I finally have a permanent solution!
I had a Retrax cover installed. Love it!
Then, I hired a professional audio guy (Driven Mobile Electronics in Chantilly, VA) to install the radio, speaker, a reprogramming wire, and cable wire to the antenna. They did a fantastic job!
For the antenna, I purchased a Breedlove stack pocket mount. This proved to be the biggest challenge. The first top plate for the mount was 6.5 inches (too short). This would have caused the cable to rub against the side of my truck and marr the paint
. So, I asked Jerry Breedlove if he had other sized plates. He did and sent me a 8.5 inch top plate. This proved to be too long and stuck out too far.
So, I asked Jerry to make me a 7.5 inch plate and he did so. It is perfect! And, we did not have to carve out any of the Retrax cover. The pocket holds the mount perfectly.
Persistence is the key.
See attached photos.