Had a Ham magnet mount antenna and a CB magnet mount antenna on my Jeep Liberty. Just got a new Liberty but it has the new 80% open top. A small antenna on the back of the top for AM FM SAT but no metal to bounce the signal off of. Suggestions needed for antenna placement. If I put IT on the last 4 inches of metal there's no metal in front of it. What antenna to get? What to do??? Thanks Ron