I own a 4-door, soft-top Jeep Wrangler and would like to fix, mount 3 antenna - one CB, one dual band (2M/440), and one for HF (including 10M). All three will be used while underway - mostly the dual band and the HF. The CB is more for group trail riding. Ideally I would like to spread a mounting bar across the back above the spare tire - so that the base was just below the height of the soft-top. My thoughts are to put the dual band in the center to give more room between the HF and the CB. I'm trying to optimize the patterns and not have the HF and CB patterns work off each other becoming a rough directional pattern - my understanding is that CB is 11M If there is a solid ground to the frame, what is the optimal mounting height for the best patterns? would flush to the top of the rood be sufficient? If I mount the HF up front (further from the CB) it would be closer to 9 foot apart and that is what I understand to be the optimal dual-antenna setup for CB. Given I can not change the geometry of the Jeep and my intended usage, what is the optimal placement horizontally and vertically for these three antenna?