An inflatable kayak constructed of drop-stitch material. When inflated, the drop-stitch members form a rigid, planar structure. To form a non-planar contour in one of the surfaces of a drop-stitch member, the opposing surface is folded over onto itself and a strip of glue along the fold adheres the opposing surface along the glue strip, thereby forming a V-fold extending into the interior of the drop-stitch member. When the member is inflated, the V-fold will alter the profile of the opposing surface and cause the first surface to project away along that profile. The V-fold can be augmented by use of a V-tape or contour member within the V-fold. Using a contour member in the V-fold creates profiles that a fold alone cannot produce.