Oops , I thought you were talking about classical guitar finger style method! :)
I hold the pic with only 2 fingers (index & thumb) like most guitarists do , I mainly use finger motion for picking and some wrist motion too ... I think using three fingers like James Hetfield would make it harder to use finger motion which is the most relaxed fast way of picking.
I've never tried "No Boundaries" , but I tried some parts from "Planet Gemini" , "Full Force" and "Speed Kills" video ... I can play "Serrana" and lots of Jason Becker's stuff too , he's more interesting than Michael Angelo.
I don't find any tabs for Michael Angelo anywhere , that's why I only figure out the nice parts instead of wasting my time to play the whole thing ... Does anyone know anywhere to get MA tabs from ?