I have programmed 3 flight modes for my Funtana mini.
1: Normal flight for precision aerobatic.
2: Extreme flight for freestyle 3D aerobatic
3: 3D with "contraflaps"

The contraflaps are coupled to the elevator stick, up elevator--> down flaps.
The beginning of the video you can see the difference between flight mode 2 and 3.
You can make extreme small pitch curves, watch the video from 1,35 minute.
In practice we fly indoor almost everything with mode 3.
When we did a torqueroll we switched back to mode 2 but now even a torqueroll we do it in mode 3!!!
It is so easy to TR with this one!