Thank-you applestar, you have several good points.
I have a 39ft long row to start from, but the row can become a 9foot wide plot if need be.
My current trellis system are 2 very sturdy 'cattle panels' that are 3ft 3inches tall by 16ft long, tied to metal t-posts. I have plenty of space, but I prefer to avoid excessively crowded vines; in order to make it relatively easy to weed, watch, and harvest.
I will plan to hand-pollinate the gourds.