I have gotten an 11 meter radio now with a wilson 500 on the roof of my silverado. It already hits everything in site. I just picked up a 102 inch steel whip that was on the cheep and I want to use it so that I can enhance my range as slight as the difference may be, but if I mount it low on the truck or on the bed somewhere it will mess up the lobes of the radio waves I'm told by my buddy's analyzer plus it would be behind the cab or the fenders and I want my antenna up high. My question is does anyone think i'd be totally insane or just a little insane if I get a three magnet style mount and slap it on my roof bringing the tip height to 15' off the ground (just below the standard overpass height according to what I've read online). Has anyone tried this maddnes and do you think i'd be asking for trouble. I also would plan on using a coil spring in the mount.