Heres a quick run down. I have 4 unsexed master kush they are 10" under a 3'x3' frame 4"x4" screen the plants are just starting to touch the screen. My question is should I train then and then flip to 12/12 or flip and then train? any thoughts are greatly appreciated.
You will want to keep them in veg and train them under the screen until the screen is ~75-80% full, when you flip to 12/12 you will continue training throughout the stretch trying to keep a nice even height to your canopy.
Once the stretch is over there shouldn't be anymore growth bursts and you can just settle in to watching them put on weight.