ORIGINAL: UStik
Fierce consensus Dick, but you should even try a Multiplex radio...
A bit more serious, using ailerons as flaps (flaperons) makes for severe adverse yaw, even if the plane floats. On a stick-type model (which doesn'nt really need flaps), I'd rather use up ailerons (spoilerons) to diminish lift for a steeper and more controlled (by power) approach - for landing. For take-off, you may use flaperons but models are usually so overpowered that they take off in a ridiculously short distance, anyway.
The Multiplex would do the same thing if I was setting it up
My new camera plane has flaperons (and spoilerons ) -ala the glider setups - basically a knob trim for the flapperons