Its a very old technique I learned back in the early-mid 80’s when it was absolutely needed…its best on Sativa’s and land races though I routinely do it on all my plants when I do bud runs plus tt adds ~10-15% more weight while controlling shape a bit
Haven’t done it on a auto yet as I just got my confidence up growing them though I will with the ones that are going outside as soon as it warms up enough to take advantage of all that free light…we will be up to ~19 hrs in 5 wks - gotta get them started by Monday