I don't get the whole top at 2nd node thing. Why limit your plant to only 4 colas?
I prefer the top at 3rd / 4th / 5th node cus I usually end up with more than 4 main colas. Even if it doesn't you'll still have the 4 main colas cus the top 2 nodes will be the dominant ones. But then again I train my plant to grow at a 45 degree angle so that may be why I end up with more than 4 dominant colas. I have some with 6-7 main colas
I'll post some pics when they're further along cus they've finished stretching but haven't budded yet I'm assuming they're rootbound or something so I just transplanted them today.
btw phyzix do you know how much you'll yield from that plant? I have one about the same size and was wondering how much it'll yield cus that plant was my first time topping with the UB method.