I had to do it because plants are strertching too much. They are 60cm in first week of flowering. Last time they reached 5ft. I hope that all that growpower will go towards flowering instead. Some people make 0.3 - 0.5kg per plant using this technique. Its first for me.
Its already done though. Plants have shown signs of recovery.
I would try incorporating a trellis or tomato cage to train and tie it back. In certain cases I cut the tops into clones if they were to tall and redistribute growth hormones to other lower colas. If it is the first week of flower you could probably still clone them. I've taken clones as late as 4 weeks+
My last grow the plants got way to tall in veg like five feet, so I setup a trellis in the flower room and bent the plants almost completely over. They needed to be twist-tied to the trellis until the new lateral branches grew through.
Some people harvest pounds per plant, but they are actual trees haha. The size of the plant and root zone is more deterministic than using a technique.
One technique I do recommend is lollipop ping!