They are green so I reckon they probably do but the amount of direct light they can hope to get is a small percentage of a big fat leaf so probably not as effective, I'm just speculating though as I don't know. Good question
You have let her go for longer than 50 days I think you probably know more than 99% of the posters on here, as for the plants looking at the pictures I'd re-assess in a fortnight nice looking grow
Also, pre-harvest stress to increase trich production? Stop spreading bullshit as if its fact. Do you think kicking the shit out of an Apple tree makes better apples? Or maybe beating up a pregnant woman to avoid labour complications
From thoose pictures you posted 3 weeks at the very least, anyone telling you to harvest now has either no experience or is harvesting immature airy buds. You gotta think about it, its all well and good trichs looking ready but if you only have half the trichs its gonna finish with what's the...
Iv only grown autos once ( ak47 by royal queen) but I reckon you could get away with topping them if you did it early enough, like maybe 12-15 days after they sprout, that would give you more colas. I doubt it would do much to your yeild though as they are over in a flash and they arnt gonna...