I have this setup on my Cristen Diffussion F-22

I can take some pics tonight.

Basically there are 2 carbon rods projecting out of the wing.
They have a receiver tube mounted just inside the fuse.
I use 2 thumb screws through the fuse into the side of the wing to keep the wings snug to the fuse.

The receiver tubes do not go all the way across the fuse. They are glued into part of a former on the side, maybe 2 inches into the fuse.
Very strong setup.