Italia, a few thoughts:
How exactly do you suppose a weather-vane or weathercock works? You kinda glossed over it's ability to turn without any control surface.
At some point in a bank, the horizontal stab/elevator is, in effect, going to become the vertical stab/rudder and vice versa. Add into that some keel effect and some vertical thrust. It's all vector analysis and it doesn't really matter what does what. Gravity is down, the rest is variable.
The tail on a plane is still a weather-vane - it's just a variable weather-vane.
Maybe you should just get a Beech 35 so you don't have to worry about this problem.