I recently bought a 15x48 tunnel hull boat with a 50hp outboard. This is my 1st tunnel hull, for the past several years I have ran surface drives. How do you achieve optimal set up from one of these? It has the tall transom and jack plate, 4 blade and 3 blade prop, and trim. It is currently set with the cavitation plate about even with the top of the tunnel, is the normal or can more be achieved? I forgot to mention the tunnel is vented with the ability to block the vent.