Every summer I guide a few whitewater rafing trips where we use these hand pumps like the one that tony shows above for water wars. The pumps with the flex hose on them also work great for bailing water out of some rafts, canoes, etc. When I'm not waging water wars on other people, I use my Rainbird hand pump for its primary purpose. These things sure are handy when tapping into a homes existing water service line, which is usually a few feet down in the ground in this area. Before I got the hand pump I was often faced with a deep muddy hole in the ground. The water wouldn't perculate out fast enough, and I'd get pretty impatient because of the homes water being turned off. So there I would be with Jerry's Big Gulp Cup, my head down in that muddy hole with my other end sticking up. I can't tell you how old that gets.