This question has probably been asked here before so please forgive the redundancy in me asking again... but... has anyone ever seen a waterer for a chicken coop/run using a similar setup as the one used in offices with the 5 gallon water jug upside down? Are they available for a chicken operation out of the box or would I need to get a bottle and MacGuyver the rest of it? Based on what I've read here, maintaining a fresh water supply for the flock seems to be one of the more labor-intensive tasks involved. Any suggestions and/or tips (and pictures) would be greatly appreciated. Thanks.