It appears to me that GVG vapours are pretty concentrated, whereas Volcano vapours are by their very method of preparation diluted in a larger volume of air. I feel this very much bucks the whole 'one toke vs. three tokes' argument greatly in favour of the single, concentrated inhalation wherein it is the greatest concentration gradient that 'wins'.

Not that I know anything about anything, but, I, also, would support the 'one hit' goal.

And not that I'd ever have any inclination to work with gargantuan hits, but if I were to give it a go, and if I had a co-conspirator (for safety), I might consider a dab rig and a quartz banger nail. Measure out the monster dose into a metal spoon, follow label directions for heating the banger, and, well, I don't want to sound like I'm promoting such activity, so I'll stop. But there's neither dilution nor doubt, with a booster-rocket like that...

Again, I personally have no such inclination, but if one were to travel that path, a safety-buddy (living human being) would be requisite. In my humble opinion.

Here's to research, and here's to you, GreatArc, for working on it.