I've been offline for a while, good to see you're still at it
It's funny, when I started growing I felt like flowering took forever and was always looking for ways to finish faster (I grew a lot of Sativa doms). My last indoor I had a pair of Jack Herer's that finished super fast, and I felt like the colas never had time to fatten up, it hadn't occurred to me what could be lost by a fast finish. Two JH's in 7 gallon pots with a decent 5 week veg time -- they were from dispensary bought clones, so they were a couple of weeks old from rooting when I got them, and they had sufficiently filled the scrog by the time I flipped them. I ended out with a total of about 6.5oz from the pair... should have been more and I think would have if those colas had time to put on more bulk.
My best guess for my part in this is that I gave them too much light -- I started with a mix of COBs, running at around 50w/sf, but turned it down about halfway through flower when they started to mature too early. And probably too much time with those funky lizard UV bulbs. I stopped using the UV bulbs when the hairs started to darken too early. I think each strain reacts differently to them and I've never formulated a reliable system for using them. I think I might retire them.