I appreciate the replies.  The pics of the Big Apple's flap/spoiler combination is what I had in mind, although I didn't realize that the wing was slotted to redirect airflow from the spoiler.  That is the direction I am planning on going, since I plan on using the torque tubes for the flaps.  I'm uncertain if I will slot the wing, or just hope that the spill and induced drag from the spoiler will be adequate for effect without the wing slots.  I would assume that you would want to build a sealed chamber in the wing if you were using the slots.  Slots and a chamber go a little beyond what I was planning on for a KISS build on the US.

Bob