I use masking tape to repair breaks with 99% success.
Sometimes I add a small splint to the outside of the tape with another wrap of tape.
I use zip ties if I "split" a plant at an intersection to hold the sides together.
Remember to remove zip ties a few weeks later as plant will grow to cover zip tie.
I only have knowledge about the one Bagseed I am working with.
I FM and LST , they both seem very productive techniques.
I like Bondage ( in my garden, not bed, lol ) tying down branches allows new shoots to grow. You can have a horizontal branch by tying down, more tops that 1 for sure!
I have gotten 40+ Tops from one plant after really working It over with the above techs.
I have experimented with veg period, I have tried flowering plants at first sign of sex to 7 months in my veg.
Bless,
DZ