To the original poster, YouTube.com has many videos under "how to pick up a heavy motorcycle". There are standard techniques demonstrated in the videos that you may find useful.
There ARE a lot of videos out there on "picking up a dropped motorcycle". As I went through them, I was looking for one that:
1) Was a tall heavy motorcycle like a Stelvio and not a low-rider cruiser just sort of rolled onto its crash bars or was not a DR350 that weighed half what a Stelvio weighs.
2) Was a demo on a bike that had gone OVER like they do, not just sort of resting on the bags and handgrip, but with the wheels pointing up in the air at about a 30 degree angle.
3) Was in a roadway, probably a busy intersection, with a bunch of cars held up behind, blowing their horns, the rider is mad and frustrated at himself for dropping it, the adrenalin is rushing, and you can't remember a thing about how you're SUPPOSED to pick up the bike rather than just throw your back out trying to brute-force it up.
Now THAT'S a challenge! However, if you check out enough of the videos, you'll find enough to get you through 1) and 2). For 3), you're just going to have to have it happen to you!
Thanks for the heads-up. Next time my sons are over here, we're going to lay the Stelvio over on a blanket and try it .....
Lannis