Sharp Eye SB-10 Surfboard Model Description:The SB-10 was designed from the Glider Model aiming for an advanced, stronger surfer. The bottom is a deep single concave with a low entry rocker and low tail lift. The SB-10 will feel stiff if you have noodle legs, but will be the fastest board ever. The rails are full, and the outline is wider in the nose area. Wave Size: Medium to Head High. Skill Level: Intermediate to Pro.