I believe you want a "shark skin finish"?..
This could be achieved by using sandpaper with the grit side exposed to the airstream.
As to how much of the wing would need this or the size of the grit, I wouldn't hazard a guess.
If it's possible with your plane, the best way to use the qualities of the 1223 is to keep the airspeed high enough to avoid the seperation bubble responsible for the hysteresis. It's due to the Reynolds number.. airspeed is the best preventive.