Mine looks identical to the second example, but I have 25 branches which may be the reason its so top heavy and tipping over. That's a lot of branches, but I'm a glutton for punishment. I wish I had fixed the rebar to the bottom, that makes for a much larger base. I think i'll have to go swimming when temps warm and retrofit them.
I also finally got fed up and ordered some porcupine centers. Seems much simpler to place.