I like using flapperon's for tight loops.... but only coupled with elevator.... Flaps go down in proportion to elevator going up.... Just makes the elevator a little more effective....

As far as the flaps working like an elevator... I've had the same experience... when I dial the flaps up or down with the ch. 6 knob, it affects pitch the same way as the elevator... raise the flaps and the nose goes up, lower the flaps and the nose goes down.....

You can't use flaps like a conventional aircraft on a fun fly.... I only use 'em to make flat spins crazy tight......