MM, The 'shadow below the box' makes me think that the Darvas Method is somewhat of an AIM variation.
The B/S Safe values define the Box (and the shadow).
As a stock moves up AIM would normally indicate a Sell as the upper Box line is broken, but if you did a Veale, a new box would be defined.
The only other thing to do is to Sell(close out the position) when bottom box line is broken.
As Zeev indicated, in an upward market the weak stocks would drop out and the strong stocks would remain.
-nothing happens without a dream