Tidal Wave (Wet or Dry)20ft. Double Lane Slide The Tidal Wave Water Slide is Maui's ultimate water attraction for your party. As you climb the stairs to the top of this massive water slide your adrenaline starts to flow. Once you've reached the top choose one of the two slides where you will then race over the wavy dips in the slide to the splash pools at the end of this thrilling ride. 27'L x 17'W x 19'H