The OP 4 is a high performance round tail for when the surf is on, yet a step up is not quite needed. This board has continual curve in the rocker for late drops and performance in square pockets. The plan shape has a continual curve to handle higher speeds and confidence in critical direction changes. The recommended length is 1-2 inches taller than your height. This model is highly recommend for your board bag. This board is not recommended for novices.