I have also used this dam float kit on petrol pumps as well to keep foot valve out of the mud with good success.
Elwyn Beak 'Carrara Homestead'
the dam float kit, like the solar pump and panel kit was supplied in a timely fashion, well packed and with good advice on usage. It is now supporting my pump in the deepest part of the dam (right in the middle) about 35 m. from the bank. I really appreciate the service that I have received from Shervey Solar Pumps, it was friendly and helpful (and local) and wouldn't hesitate to recommend them to anyone wanting to go solar with their pumping requirements.