I recently bought a mobile antenna for 2m/70cm, the MFJ-1412B. What is the best mount to use with this? One that attaches to the trunk of my 2013 Ford Fiesta, or a magnetic mount on the roof or trunk? Do magnetic mounts have a tendency to fly off at highway speeds? Also has anyone ever had trouble with having their car / truck ham antenna being vandalized or stolen? Thanks 73s KF5YOF