I built these mostly because I think it will be neat to watch. They should not increase the yield in any way, as they don't increase the root area in fashion. The effect of squash enveloping a trellis are impressive. It would be neat to build a bunch of these in a field and let it all get encompassed. Like ancient Mayan ruins being reclaimed by the forest, the field's texture would reflect the unseen artifacts. Now all that is left is to have the squash make a go of it.