From my understanding you can use the SCROG technique on tomato plants. My friendwna runs a big company that designs grow houses for cannabis and he will help set up a SCROG system. He told me it works very well for tomato plants as well. You can google it for more details but it's essentially topping the plant at a hightyou are good with so it doesn't get taller but grows outwards, then setting up wiring for it togrow across. Very similar to what the above post is doing where he creates an arc, but can be down in a more compact area.