For the DIY CBer.
Stop coiling your coax! Run your coax side to side or front to back in the headliner or under the carpet. It doesn't matter what antenna you use. Be it a mag mount, whip, or fiberglass. Low quality coax should never be coiled. Changing your CB radio should never effect SWR either. Remember your radio is 25%, your coax, antenna, mounting location, and grounding is the other 75%.