I'm pretty familiar with other methods...
most of mine are topped several times in veg and get very bushy...
I also supercrop..so I have a few 90 degree turns in them to keep em at a decent height
but not much vertical growth because I cant raise my light.
the other factor is replanting...when I transplant to 5gal buckets my plants automatically get about a foot closer to the light than they were before.
The theory is: the light is at the same distance but different intensity...
in hopes that the plants will seek the same lux range that they were getting and move up?