I would have done exactly the same, if Graeme hadn't punched the right one right in front of me. Got thrown by the square high ropes course just behind the control - when I mapped it I thought those courses were the most obvious thing ever, but on the day I just didn't register them as all. I heard a few comments that people kept reading them as fences, too. :/
I initially did on the first pass then realised what they were and aimed for the towers instead.