I haven't seen any photos of the Hangin'-A-Round field in the metal, but you might profit from a nice wide shot (try
http://www2.usfirst.org/vex/2006/200...escription.pdf ) or the
game animation.
Or, alternatively, build some mock-ups of the parts. You can build the goals, both low and high, for about the price of a couple of twelve-packs of Mountain Dew (hint: when it says Lexan, think hardboard or luan), and the center structure can be made for cheap as well. Look
here for the field Bill of Materials and some options for low-cost fields.