Beeker is a simple design for 3 channels but it can be lots of fun anyway.
I've set up the Steering controls to be either or both the Aileron stick as well as the Rudder stick.
Each does the exact same thing it's just that SOMETIMES pilots revert back to 4 channel thinking.
So with this setup the plane will react to either mind set.
With a simple UC foil and Elevator, Rudder and Throttle only controls it can be lots of fun to
explore the flight possibilities.
Search out Beeker on Rcgroups.com, in the scratch built foamys forum, for more information on this design.