i got a bogen 3373, the 13', i dont think i think the only time i ever ran full bore was bonnaroo mainstage for the dead this year with my c1000 hypers, you only need that hieght for monsterous stacks on a festie mainstage, but you don ever have to extend it all the way or get the largest footprint to be stable, mine have the twisty knobs or whatever and ive never had a problem, hope this helps
-chris