Here is another method that i came up with for my Magic Extra.

This requires reflex mixing (think that is what it is called). The flaperons are mixed with the elevater so when you give down elevater the flaperons also move in the same direction.

Gain a ton of altitude, then pitch the nose down into a descending roll to the left, you should be at low throttle. let it roll then at the same time give up elevater/flaperon and right rudder. It should enter a wingtip spin. If you cross the aileron you would obviously enter a flatspin. When you get comfy you can do some blender/wingtip spin combos with this method.