AL567 and others are correct, if possible, hard mounting is a better option, but a good mag mount setup that is maintained properly will work good too. Just have to keep an eye on things a bit more with the mag mount. JMO. I wish I could hard mount my antenna on my work truck but the job won't allow it. For what I have, the mag mount works well. I know a hard mount would be a better option but is one I don't have currently.