Has anyone tried using Flaperons for takeoff on their Bobcat?

I fly my jets from a small model airfield – 100 ft of tarmac, so need maximum lift to get the model off the runway as quickly as possible. Obviously the model is heavier on takeoff with full fuel and smoke oil on-board, so I thought it might be a good idea to have both Ailerons set to 20 degrees down for takeoff (Flaperons), mid position for normal flying and both Ailerons up for landing (Spoilerons).

Has anyone tried this and what were the results? Did it shorten the takeoff run? What angles/travel did you set?