Just Arrived – Yamaha GP1800 Waverunner (Freshwater Use Only!) This recently traded-in Yamaha GP1800 Waverunner has just 45 hours on it and is in great shape overall. Fully serviced and exclusively used in freshwater, it's a solid performance machine ready for summer fun. Freshwater only use 45 hours Fully serviced and ready to ride Stored indoors ...