Just read a aeronautical discussion of low speed flight and STOL performance of light planes. It seems that according to this analysis that "my" trailing aileron design above on the McCessna is ideal for positive roll sensitivity (no dead spots)and improved STOL performance, particularly when used as flaperons.
Perhaps, this explains why the Kitfox uses a similar aileron design although much longer span-wise as do several other light plane designs.
Apparently there is real control merit in "squeezing" the airflow between two airfoil surfaces or as they describe a funnel effect along the wing bottom boundary layer. Also, the proper name is the Junkers style flap after the JU52,etc. Just can't wait to try them as flaperons
I can hardly spell injineer but I almost is one, as the old joke goes!