The Aku was the first surf style wakesufer introduced by Phase 5. The diamond bumped wing tip allows for popping off the water. A pulled nose allows for aggressive carving without nose diving. Glassed in Phase 5's high end FLEXtec V2 for a long lasting board. The AKU is aggressive, fast, ready to slash, and boost to your hearts content. The twin surf fin setup give speed and drive while the diamond bumped wing tail gives you the response and performance expected from Phase 5 Wakesurf Boards.