No hernia (close) but the pinched nerve in the neck did not appreciate it and my lower back may have suffered a bit more.
I should have video taped it (but don't have a video).
I used one of those sectional ladders (bend and/or extend) and used climbing webbing and hung the AM3 from a rung. Carefully, angled and raised ladder. Moved it to the wall slowly and then leaned the ladder toward the wall adjusting to the right height and location. Care was needed because, frankly, the AM3 was like a wrecking ball as it swung from the webbing and I was trying to keep my 100 year old lath and plaster intact and not drop it on to the similarly aged oak floor. It was like Laurel and Hardy hang a tv mount except in this case it was just ME. I did manage to catch the webbing between the wall and mount and had to cut it to free it.
The TV hanging was also just as tricky, particularly, liberating the Sony's pedestal.
Only to find I was too close to the corner wall - I did mention Laurel and Hardy and they were joined by Abbot and Costello!!!! I managed to fix it by reversing parts of the operation but not entirely removing it from the wall. I angled a 2x4 under it and wedged it against the floor and AM3 and shifted the entire thing right two inches or so.
I needed a challenge and could not find a friend when I wanted it done.
Last week was dedicated to pulling the wiring through the pocket door wall (without interferring with the sliding door) and down into the basement and then back up to components. More fun trying to respect "this old house" while accomplishing what I wanted.
So what SCREEN are you aiming for - something BIG, I hope, to amortize the cost, size and weight of the AM3 (G)
And while the self-mount was a challenge - try getting some help. Really, the issue is getting the screen where you want it since the template is not necessarily geared (sized) to where your screen's mounting screw holes, bezels, etc might be.
Also, on my Sony (somthing I forgot to mention above), the HDMI and component plugs are sandwiched up behind the AM3's horizontal member and bracket making it hard to get the cables into place.
But it has impressed friends. With slightly loosened bolts, it moves reasonably well.