Well, if nothing else comes of this, at least Jim(squared) motivated me to start looking at/reading the rulebook again after almost 20 years of not having read it.
I did find several things that support firing at a 'hex' with ATT. One of the most telling is C6.521 "An Area Acquired counter applies to all non-Aerial units and terrain which are currently in the acquirer's LOS in that Acquired counter's hex. Using Area Target Type, a Gun can fire on a hex not containing a Known enemy unit;"
I'm still reading/studying the situation, but am more than ever convinced that you can indeed hit a target hex with SMOKE if you hit any target in the hex including the hex itself...with the hardest to hit target not mattering at all.
I did find several things that support firing at a 'hex' with ATT. One of the most telling is C6.521 "An Area Acquired counter applies to all non-Aerial units and terrain which are currently in the acquirer's LOS in that Acquired counter's hex. Using Area Target Type, a Gun can fire on a hex not containing a Known enemy unit;"
I'm still reading/studying the situation, but am more than ever convinced that you can indeed hit a target hex with SMOKE if you hit any target in the hex including the hex itself...with the hardest to hit target not mattering at all.