You are making this way too hard on yourself...........it isn't Rocket Science. Just put a protractor on a flat surface of your transmission (usually the end of the tailshaft has a flat, round section that is the same angle as the crankshaft line) and get whatever number that is. Lets say it is 5 degrees. Then simply aim your rear end pinion up until your protractor reads 5 degrees up on a similar flat surface.
That's all I have ever done, and I have never had any driveline wear or vibrations. Sometimes volumes are written about something that only needs a sentence or two written about it. Trust me, have I ever lied to you?
Don
That is terrible, sad to hear about him.
RIP Mike Frade, aka 34_40