Alternative to LST

Put up a horizontal trellis just above the plants. Once they make it through the trellis strap them down to the trellis with twist ties and such. Shouldn't be too hard to keep up with that

I personally prefer lst over hst as this is quicker and less stressful for the plant. There is fimming but this is more for seeds plants. If you do clones lst and get rid of unwanted shoots in first two weeks of flower. Not all at once as this will stress the plant excessively. I veg clones for two weeks then lst for one week and let them free again for last week and switch to 12/12. Then within two first weeks i get rid of exess and position those i want staying with gardening wire where i want them. And then defoliate them as i go thru flower

Even more LST :) , get a Scrog net for sure in your case 👍🏼.plants look good.

Could top them and do SOG. SCROG I find its better for a smaller number of plants. Once they are in the screen they cant be moved aorund that easily and will be hard getting to the ones in the back. growdiaries.com/journal/how-to-grow-cannabis-with-sea-of-green-sog growdiaries.com/journal/how-to-grow-cannabis-with-screen-of-green-scrog Good Luck!

SCROG net.