I tie my branches to the edge of my bucket, spacing them around the rim how I want as I go, but that limits the horizontal spread of the plant to roughly the width of my container. What
@Jon is suggesting is, rather than tie them to the edge of the pot, or hold them horizontally with
Carhooks, instead you would tie the limbs to the string which is just above the plant and connected to the corner posts of your tent. That way you can grow them as wide as you want and fill up the tent.
You lose the ability to take the plants out of the tent to work on them, but you'd have that with your SCROG net (Screen of Green) you mentioned anyway.
SOG, or Sea of Green, usually means running a whole bunch of young plants shoulder to shoulder on say, 6" centers. You only get the one main cola that way but many more of them. The benefits of that is you flower the plants (seedlings usually) as soon as they're sexually mature with minimal veg time.
Doing things that way you get more rounds of grows per year in a tent. So, each plant gives you less harvest but you have lots more plants and the extra round or two per year gives you more annual harvest.
The downside is many growers are in places where there are plant counts and the penalties for growing 100 plants is much stiffer than growing a single huge plant even though in the end the harvest might be similar.