Thanks man,
Here is a guy on YT that does a quick how to on a double stack.
I thought about it, but I need the height.
I read a shitload about scrog screens and fact is, a lot of people are doing it wrong by putting the screen too high.
It then just becomes a trellis, holding the top colas from falling over.
The one read that I did, the guy said after MANY variations he came across the perfect height from the pot lip to the screen.... 3.5 - 4 inches !!!
That is a bit low in my opinion, but he has YEARS of experience on me, you would really have to be on top of that or it could get away from ya..
I did mine at 6.5"
The idea is, as the plant starts protruding through the screen a bit, you gently pull it back down threw the screen and get that top heading away from the trunk.
the sooner the better for this as it exposes those little budsites that would be otherwise in the shade, to the powerful light in the center of the screen, giving them the best chance to become nice sized buds.
As each one of those pops up through, you do the same thing.
If you think you might break it by pulling it down threw, then just bend it over and tie it to the screen on the top side with garden tie wire, same thing.