Brian,
Attached is a picture of the hinge pin detail from the plan. The hinge pin method is certainly one I have used on two 1/4 scale models (DVIII and Dr1) and is typical. The rudder is slightly bigger than A4 size so I will try to copy that at work tomorrow. I can send via email (would need you to message me your email address) so you can print or via snail mail?
On the plan, the cabane struts are bolted to metal rigging plates that are glued to hardwood strips inside the fuselage.
Hope this helps
Rob