Actually deep V's do not track well at low speeds; one of the complaints of new deep V owners is the constant attention to the helm. The boat tends to wander from one side to the other. Putting trim tabs down in V's will help wandering. So will shifting weight to the stern (and avoiding the tendancy to bow steer, as Matt noted).
Of course a long keel boat will track very well.
Of course a long keel boat will track very well.