keep binding till you reach edge of pot..then time for the flip after that...
Nice plants!! Looks to me like they are ready for the flip. It's not like you will see bud growth overnight, your 8 main tips will first grow upward. If you let them grow too much before the flip, you may end up with a much lankier plant then you intended.
Does what I'm saying make sense? Not sure I explained it very well. And just my .02
They are looking really nice,i haven't done my first grow yet,looking to manifold them and i was hoping it would lkook like this!!By the way are those 11lt pots?