I planned a scrog with 4 plants in their own individual nets. I soon realised it would have been impossible to get the plants out of the veg tent and into the flower tent, but a big part of that was the limited room I had, not in my tents but the spaces outside the tents as my room kind of fitted together like a tetris game.. It would of also been very difficult to train all 4 plants in veg tent since I could only access 1 side. Might of been possible had I been able to use the rear doors but they were against a wall.
I decided to just scrog one plant in every four and could manage that ok.
For what its worth, If your going to scrog then do it properly and fill the net to around 3/4 before flowering it. Otherwise you may as well scrap the netting and supper crop the shit out of the plants, maybe once in veg and once or twice in flower (after early topping or lsting obviously).
I'm no scrog expert, maybe done 5-6 total but the difference between a plant in a 2x2 screen and a plant not scrogged but supper cropped and staked down, spayed out wasn't huge. I can do an 8oz plant in 2x2 and it could be 9-10oz in a scrog in the same place, although my best was 9.5oz in 1.5ft x2ft.
Flower tent been an 8x4 and veg tent been a 4x4 and having 2 crops staggered with 4 plants each half of my flower tent.
