The M13 50-50 A single concave under the

A single concave under the front foot allows for punchy drive on takeoffs and the double concave blending to a vee provide lift and easy rail-to-rail transitions

wider Whip outline with Al’s single to double Tri Plane Hull bottom

developed by Al Merrick

This board from 2008 incorporates a  single concave with low entry rocker

The M13 50-50 A single concave under theThis is a performance hybrid that caters to the widest possible type and size of surfer and the widest range of wave conditions. Not to be confused with a funshape type board. Paddles like a funshape, but surfs like a shortboard. Available in either a squash or round pin, most common sizes are from 610 to 80.