I have a 396, live in NJ and for years drove my Explorer with a RS mag mount. With price of gas I switched to a Focus (Explorer now sits in driveway) and I want to put a RS mag on the Focus but the 3 feet stick will look a little out of place. I want to tune a new mag mount ant for my needs. My listening is some 150 VHF, some 400 UHF, some 500 MOT trunked, some 800 MOT trunked and HEAVY on the 800 E trunked. Any suggestions on length?