The bonzered idea of promoting lift by steeply canted runners along the perimeter of concaved surfaces is a well proven method of facilitating board speed. Center fins come in so many different sizes and shapes it only makes sense to build a board that you feel will suit your surf style and the conditions you find yourself in most; then experiment with center fins. My call is build a board with versatile specs, put the Bayne Box in it and proceed with your fin experiments.