My jeep had some brackets to move the mirrors that I would never use. So I chopped it up and used it as a bracket. I like the antenna there because I can reach out and pull it down if there are trees in the way that might take it out.
My CB hangs on the dash. There are 2 screws holding the panel on under the steering wheel. I removed the screw on the right and used it to hold the mic holder. I use the Cobra 78 WXST so there isn't anything else to really worry about.
Pic of the CB antenna
I've had it this way for many years.