SUP Tonic: 2020 Starboard Waterline Stand Up Paddleboard 0 22 01 Dec 2019 02:04 Playak The new 2020 Starboard Waterline Stand Up Paddleboard has arrived! Designed as a specialized flat-water Touring paddleboard, the Waterline promises the smoothest and most relaxing paddling sensation in conditions up to chin high chop.