Hydroplane racing captured the heart and soul of Seattle in the early 1950s and never let go. No Seahawks, Sonics, or Mariners game has come close to drawing one-quarter of the audience that watches the hydroplanes race. The unmistakable sound of the boats' huge motors was as big an attraction as the racing itself. In the mid-1980s, something began to change. The distinctive roar of the old Thunderboats gave way to the whoosh of the turbine. The old...