Most beach cleaning machines are for gathering trash and bottles. The fingers rake the sand smooth. I almost lost a good towel to a beach machine at Bradenton Beach but the driver was good enough to retrieve it for me. Beach sifter machines are a different type of beach cleaner as they sift the sand for cigarette butts and broken glass and they can be set for 1 to 6 inches depth and will recover everything from dime size and up. But the water, there is nothing to rake that except us with metal detectors.