I don't have any pics. The undergrowth is not as developed as the top growth I will admit. But it's developed enough to dry into nice little nuggets. I personally don't even bother trimming it. I just strip it off the stem and put into the pile for dry ice hash. Some people cut the tops and let the rest grow longer. I don't. I can guarantee that I get just as much good bud from the cola's that do get good light. They get huge, are hard as rocks, and my yields have been very good.
Either way, as long as your getting jars of good smoke who cares? I don't look at this as a competition. I grow as simple as possible. I don't have time or the desire to spend time trimming my plants so I let them grow. Maybe I would get more in total weight if I did but I don't care because I already get more than I need and have to give it away.
Anyway, I'll get some pics of the undergrowth and post them. It won't be impressive but even if it's not it still didn't take away from the rest of the plant. The main colas grow just as good if not better despite having a bunch of stuff that doesn't get good light. The leaves power the plant. That's just science.