Stan, next best thing to center pivot plumbing is a fake powerline. I've hunted two fields where the owners installed dummy powerlines down the fields' centers. Not up to Floyd's artistic standards, but here are two powerline decoys I whittled out of wood from tupelo gum buttswells. I tie mono to the eyebolt and toss'em over the line and pull them up where they snug on top and stake out the loose end. They work just as well with eyebolt on top and snugged tight just below the line. Good to hear you find use for the system I gave you. Gil

See what I mean about "artistic standards"? Even the shotshells and shell box are carved and painted wood.