The base idea is to stuck the tripod in the sidepocket of the backpack and strap 2 legs tight to the backpack and let the third point outward with the camera attached to it.
This is how I did it:
Step 1: The Tripod Leg Insert
Step 2: Glueing the Insert Into the Tripod Leg
The insert has a tight fit (I had to hammer it into place) and I dont think the glue was necessary at all, but I took it just in case. An other option would be to take a hammer and an awl to make a small hole in the tripod leg, into the insert.
Dont lose the rubbertip for the tripod leg, just put it back again when the insert is in place!
Step 3: Making the Camerahead Mountable on the Tripod Leg
All this, when attached is glued together with som standard epoxi so it doesn't loosen or brake easy.
Note: The M8 bolt can be seen at previous step with the M3 rod inserted
Step 4: Attach It to the Backpack
This is how I attached it and even though the tripod has more weight than other backpack mount solutions, I dont find it disturbing yet.
Tip: If you want to use your tripod as a pole mount for your camera its easy. Just unscrew a bolt at a joint connection on the tripod.