cant beat an 8' shakespear.
as to running duel antennas, i wouldnt. they would have to be placed at specific distances, and would be semi directional, and i think that would be a bad thing in time of need.
although if placed far enough apart i dont know how they would react, or if there would be any performance loss. but belive there would be performance loss just by the added antenna wire itself.
either way, im sure paul could really nail this one down for ya.