Halfway thru figuring out my next 1/2a stunter build and have a question. I am wondering if there are any advantages or disadvantages as far as flying capabilities go to having the rudder stop at the end of the stabilizer so the elevator can just be one piece, or split the elevator so the rudder can continue to the back or beyond the elevator and fasten to the bottom of the fuselage. Really just wondering if the extra work is worth the effort. Hope this question makes sense!

I am not an aro engineer but I am guessing a big rudder and a split elevator has to do with rudder authority and structural design in a full size airplane.  Control line doesn't need this so a slab rudder may be as good as any.

           

Or perhaps a little of both like the notch in the rudder of a Wee Duper Zilch.

George