Project Knott’s Soak City Water Parks Outdoor Products used Colorado Drop Flatline Loop™ Open Flume Services provided Design On this page Featuring Colorado Drop An extreme speeds and drops attraction, Colorado Drop water slide is a high thrill inner tube slide to complement your water park's ride mix. Flatline Loop™ Starting in an AquaLaunch capsule, Flatline Loop sends riders into a horizontal 360-degree loop for a heart-pounding body slide experience. Open Flume A versatile attraction, our Open Flume water slide can be configured in a number of ways to complement your ride mix and appeal to a wide range of guests.