P-Mount Degrees of Freedom

[daveintheshire]

The time is nearing for me to build a P-Mount.  Naturally I have been plundering every thread and every blog going to see what others have done.  Some mounts boast 5 degrees of freedom, but I'm struggling to picture where the fifth is...

1. Azimuth at the thrust bearing on top of the tripod/pier
2. A kind of "linear elevation" (for want of a better phrase) in the beams of the parallelogram
3. Elevation at the binocular head
4. (On the better ones) Yaw at the binocular head

Is the fifth degree some form of "roll" for the binocular?  In a related question, has anyone ever considered putting a mini ball head as the last link in the chain before the L bracket? (I shamelessly robbed the notion from my current mount: https://garyseronik.com/build-this-simple-binocular-mount/).

Thanks All.

[DarkTraveller]

I use an L bracket on my Astro Devices but could see the potential of trying out a trigger grip in its place.  That might save having to swing the arm around and adjusting you chair for some nearby targets.  

[BinocularSky]

Don't forget the longitudinal and vertical adjustment necessary to ensure that your point 3  axis can be made colinear with the binocular's centre of mass.