More importantly, why the subterfuge? Why not just introduce some kind of game mechanic in which all this "hiding and watching" is simulated by having him stay in the same hex, hiding and watching?
You're simulating hiding and watching by running outside and running back in?
I admit I am looking at this literally, because I see it as, if nothing else, an enormous time-waster if nothing else, in addition to doing one thing in order to simulate something else altogether.
The proponents of skulking are saying that in this case, movement is being used to represent troops taking cover. Movement=no movement.
Not very intuitive. Why not greater TEMs for defending units or something more elegant?
Let me put it another way -
what is the problem with a unit simply staying in a hex and receiving fire in the DFPh? What is unrealistic about that? Why should we permit defending units an advantage over and above terrain TEM to do this? The massing of firepower on the attack if precisely how units "in the real deal" managed to overcome defensive positions - that and judicious use of maneuver, as pointed out by Jim B. and others. Still looking for a decent quotable example, but I hope we can all stipulate that.
So why do we feel that the defender in ASL is at a disadvantage if not allowed to skulk?