Hopefully you aren't confusing my photoperiod plants, with my autos! The day I can find a quality smoking auto that will grow 30feet around the outer perimeter with 6 feet tall branches, is the day I quit growing photoperiod plants!Everyone's got their own ways of doing things, and what's good for some is not quite as good for others.
All variables need to be taken into account. I defoliate, but I've learned not to bother with LST as my setup doesn't allow for much side lighting.
I defoliate when necessary but apart from that I just let them do their thing, in some cases where all the light is coming directly from above with smaller footprints like my LEDs, I think they're best off doing their thing, the plant will grow the way it's most beneficial for it to use the equipment provided.
Nobody can argue with 912s results however, you grow plants that closer resemble trees, simply the biggest autos I've ever seen!