Someone was wondering if Si would keep them from having to add supports. I've found, it depends, lol!
The more columnar, or vertical, the plant grows, the better the chance you won't need 'em... and plants like that are rare in my world!
But of course, I'll show one off!
We grow for the buds, and the best buds are usually at the ends of the branches, and if they grow the way we want, they're usually heavy, and usually not on vertical stalks. Leads to bending in my garden. Usually not to a breaking point, but enough to make them droop below the canopy, and the lights.
Tomato cages would be great, but I like to put veggers into the bloom areas at about 18" and they finish from 3-4', unless I'm napping, lol! So, I like to keep the lights right on them as they stretch, and the cages are too tall for that, and quite a pain, at least for me, to get on after the stretch. I do have a buddy who wraps his plants up tightly with a piece of slick flooring underlayment, and then slips the cage over, which might be great if you have the right height cage on hand, and apparently I haven't.
So, now I let them stretch like hippie chicks, no supports, and when they're done, I slap this dominatrix shit on them. I stole every bit of this.
I have to move them from area to area, and give the 1/4 turn daily... anyway, it's kind of like a scrog with a lazy net, a really, really lazy net.
There's a lot of ways, you've just got to start stealing them!