How to Flash back [Whitewater Kayak Tutorial] by sethashworth | Nov 14, 2018 | 2016 Rock Star Competition, Instructional, Video, Whitewater, Whitewater Instruction | 0 comments Seth Ashworth gives us the low down on how to perform one of his favorite freestyle tricks on a wave, The Flash back. Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment. Δ