A structure for protecting vehicle occupants from blasts beneath a vehicle, the structure having a mechanism for mitigating vehicle hop caused by the blasts. The structure comprises a rigid V shaped hull section of the vehicle located on an underside thereof. The V shaped hull section has an oblique body panel facing outboard and downward relative to the vehicle. The structure also has a wall panel disposed adjacently above and along the oblique body panel and a border defined by a juncture of the oblique body panel and the wall panel. A flat, blade-like blast deflector vane is located proximally along the border and is positioned outboard of both the oblique body panel and the wall panel. The vane is disposed at an acute angle with the oblique body panel and is solidly attached to the V shaped hull section.