Look at the boot top on this yacht. The lower interface of the white line is parallel with the water. The upper one where it meets the varnish sweeps up at the bow following a shallow parabola halfway between the curve of the sheer and the waterline. The vast majority of yacht painters no longer take the trouble to follow this traditional skill. If the yacht has a flattish sheer, it doesn’t make much difference, but for a boat with a spring to her looks, to saddled her with a parallel boot top is to sell her sadly short. Get it right and she lifts her head up and walks with more of a swing. It’s tricky, but so well worth the trouble.