Them's Some Big Women!

I had a gap in time when I was unable to flower my plants. My biggest is now about 6 1/2 feet tall and it's starting week 5 of flowering. It is now beginning to lean pretty significantly. Any tips on how to support her? I've got to move her around a good bit to get at the rest of my girls, so portability is key. I was thinking of hanging a hula hoop from the ceiling and tying her up to that, but if there's anything better, please let me know.
 
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