As seen in post #41 above, my boat has no issues draining the water aft-wise from the decks, and the factory scuppers work fine (scupper to port of the cockpit below). After I remove the lead pig or whatever it is from bowels of my bilge (discussed in another thread), I'll see how the draining works this next season.
On a "fix one thing, break another" note, I do however need to add some cockpit drains to the aft end of the cockpit, so the water will drain there instead of pouring down my cockpit hatch. Turns out it's not so water-tight when submerged...