Check out:
https://www.rollitup.org/general-marijuana-growing/413359-supercropping-canopy-control.html (I'm somewhere near the end, but plenty of examples).
What you draw is what I named (yes named

) a VoG as in a Valley of Green. Pronounced "phuq". I had a plant in the middle that was a week ahead, and some major unexpected stretch, so didn't exactly end up with that valley. I got the idea (yes 'my' idea

) when I did a halfpipe scrog, which was more of a quarter pipe. Switched to a different system and didn't want to scrogg yet still end up with the same canopy shape. I pinch, bend, snap (90 degrees), hang weights on branches, and just yesterday added 30 yards of binding wire (with a rubberish soft layer so it doesn't cut into the branches.
Or you can buy a decent reflector that spreads light uniformly, some over 90% on the entire (horizontal) canopy. Then the barely 10% is hardly worth the effort (still a funny hobby imo).