my 2¢ about the truss...
these are standard lighting/rigging trusses that I'm sure FIRST has plenty of easy access to (and they really aren't that expensive). The GDC is not only responsible for creating a game, but also making it look good, and ensure that it can stand up to the rigors of competition. Sure a rope or volleyball net would have done the job but 1)it'd look really cheesy, and 2) when one of these big balls hits it, it would give, lose slack, sag, and have to be re-tensioned between each match. The trusses simply look good, and won't ever change dimensions.:
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