...here bro, here's a diagram the might help explain why barebulb vertical is better than using a hood.
View attachment 398023
...it increases the size of the canopy SIGNIFICANTLY and therefore it can't help but yield SIGNIFICANTLY more as well.
believe me, if i wanted to actually make the effort to really dial my setup in i could do significantly better than a single elbow, ...and keep in mind that some strains do better than others, my ChemD only yields maybe 1 and a half, maybe 2 zipz per plant while my Happy Rose routinely pulls around 3 zipz per plant per cycle, if all i was interested in was weight i'd just run the big yielders and count my money, but i don't do this for money and i like variety so i do things lacadaisically and with multiple strains every run.
...and just because someone quotes numbers that seem out of line to you doesn't mean that he can't be telling the truth and he just knows something you don't.
don't take this as an insult Pisces because i mean no offense but so far every one of your assumptions regarding barebulb vertical is just wrong.
...if you have a 4 x 4 i can give you detailed instructions on how to set it up just like mine pictured above and i guarantee you you will get results very similar to mine your first time off the line, as it were.
peace, bozo