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 |    By S. Korowitz 
           Howard Arneson likes to prove a point. The inventor of the Arneson
      swimming pool cleaner and Arneson Surface Drive has, in recent years, been
      focusing his resourcefulness on gas turbine-powered boats. And to show
      just how fast and dependable they can be, the 69-year-old Arneson recently
      drove his turbine-powered 32' Skater from New Orleans to St. Louis,
      determined to break Bob Cox's Mississippi River Challenge record of 20
      hrs.16 min. set in 1987.And beat it he did-by 7 hours and 36 minutes. The
      race, with a history going back almost 100 years, is run by the Gulf Coast
      Power Boat Association and sanctioned by the APRA. Competing against three
      other boats, including another turbine-powered monster (run by Mississippi
      Race Chairman Ted McIntyre), Arneson
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