I'd love to have dangling squash like these people. I ran across this image on flickr while looking for Kabocha images. We had one squash climb the back fence the other year. It produced a spaghetti squash on the alley side. It grew pretty large and then vanished. I hope that it was taken by somebody that appreciated it. It seems that a sheet of concrete re-enforcing wire (6 inch squares) should be able to support the growth of a couple squash. It should also reduce the footprint of greenery in the garden, though it root system will spread out below it anyhow and I shouldn't try to squeeze things in below it. That would be the smart thing to do.