as i've been told and done myself is,,,
when the plants in flowering stage,,just below the buds you pinch the stem to make it split,,after a few days,,where it's split,,it will swell.
when i did this on a plant,,i left some of the other branches to see the difference and once the plants were readyi could see the difference,,the super cropped branch buds were nearly twice the size of the normal one's.
i do this every time now,,sometimes i've had the bud drooping over where the stem is split,,but these plants are so resilient,,they just heal themselves.great plants