Cutting breaks rule the roost in comps.  If you have a way to disconnect the rear drive and do a front burn locking the inside tire tire in a turn will make you turn SHARP.  You can always to a 3/4 burn too.  Leave the power to all 4 wheels but lock the inside in the rear.  The unlocked rear tire will spin twice as fast as the front but it will make you pivot on that rear locked tire really nice.

I'm welded in the back but I am swapping in a 300 so I'll have front dig and eventually I'll put an arb in the 14 bolt so I can do super sharp digs.