Merry Xmas to all!

Greg,

what about a standard wire passing through a piece of brass or CF tubing embedded into the tail post? It's a pretty standard setup which is independent of the location of the rudder. To support the wheel wire, you can simply use a collar on it where the tube begins at the bottom of the fixed rudder portion. An L shape in the top part of the wire takes care of the steering.

Basically an extension of the control horn concept shown on the plans. Of course, you would then control the rudder with P-P (always nice).

David.