need to know a few things

i want to keep them short and sweet at what age should i top them a freind told me about put a screen over them and pulling the new shutes thought the screen and when when a new one comes out u pull the old one out and then put the new one thought well i thinks that what he ment anyways i wish i could remember what he called it if anyone know what my stoned ass is talking about please help

It's a take-off of Sea of Green, called SOG, and if you put a screen over the plants it's called Screen of Green or SCROG.

SOG is growing many plants close together, and concentrating growth to one or several main shoots per plant. ScrOG is growing fewer plants in the area, and spreading each outward under some chicken wire netting that is placed about 10 inches over the plants.

HTH

If you want to do that go buy some construction fencing from Home depot or lowes.Its a plastic fence real light about 4 wide and has holes about 3 inche big through out it weight the plants down and you pull the bud through just like pot said.Good luck