The hinges used in the photos above were by Dewey Broberg, better known as Dubro small pinned hinges. No pinning with toothpicks required. Just lightly score the plastic surface with an exacto knife a dozen times on each surface and install with epoxy. They may be ripped in half at a crash, but they have never failed in flight. This plane is still in primer, finished in 3/4 oz glass and polyester resin. At the hinge line it is shaped as a ball and socket with the pin of the hinge inset into the ball so the gap is very small yet allows the surface to move.

I have had the CA hinges fail from just a slight bump to the surface. But I use them too on slow small stuff.