 I have included a plan for my stand-off scale Giles g-202  which I call BGiles.

As I am an aeronautical engineering student, I designed the  BGiles with a couple of goals in mind:  

It had to be very neutral in flight, ei: able to hold  any line like a pattern ship.
It had to be capable of 3D manuvers (I designed the  control surfaces to have the utmost efficiency. 
It had to be light and easy to build.

I am happy to say that the plane is all of the above and more. 
It is very clean and thus fast. The tip foil is thicker by  1% to avoid tip stalling (12% root, 13% tip) and my model,  weighing in at 4 lb. is a real treat to fly slowly. 
It really > resemb;es the Lanier 17.5% Giles but it is slightly larger, easier to scratch build and tracks better. 

Specifications are: ws-50", wa-550"^2, ln-44", wt-4-5 lb. 
 
The dihedral angle is 2 degrees for each wing panel, which translates to about 3/4" to 1" under each panel. 
The dihedral will help eliminate roll coupling in knife edge. Also for knife edge, you can move the stab about 1/2" to 3/4" down to take away the pitch coupling. I have not done this because a) you have to experiment a lot to find out how much to move, b) the coupling is very small, c) it just doesn't look right with the stab low
