Mobile rope pump "Paddy version" being used for demonstration in a lake in Thai Binh Province Vietnam. The rope pump concept invites to experiment and that is meant to be so! Of course everywhere the situation of use is a bit or a lot different, so people can make changes. to their likings. No one is satisfied at once when experimenting. First of al experiments can be fun as in this video, then this experiment has taught these guys what works and what needs change.