Totally agree with Adjorr... my last run I had 3 WW that were 4' tall in my 5' tent, and had to do heavy LST (so much so, that accidentally some of it turned into HST/supercropping, ie. broken main stems). I can totally attest that the plant is one resilient girl.
I was doing LST right up until I harvested. Just try to persuade the branches a little each day. If you bend it over, tape a pen to re-strengthen it. I literally broke a main stem 3/4 of the way through at about week four of flower, and with the tape job, I noticed no ill effects.
I just tied string to the branches, and then roped them to my pots, or anywhere else in the tent depending on which way I wanted the branches to go. At the end, it almost looked like a ScrOG
-spek