Unless I'm mistaken LST isn't meant to stimulate a larger yield. From what I understand the whole purpose of LST is to break the apical dominance, which will give you more evenly sized buds across the canopy, rather than one giant main cola and a bunch of smaller buds across the side branches. I personally top all my plants, to break the apical dominance, and then use LST for no other reason than to force my plants to fill out the footprint of my tent before flipping to flower.As a side note:
I learn to LST under the assumption that i would get more yield. That never happen. I did get height control an a more open canopy. I posted so you can see that stem knot...i cant confirm but after years of doing it ...i dont think its worth it. Just sayin.