The Latest Boat From Supreme Boats. For the last year I have been running a new boat model from Supreme Boats. The Supreme S52 is the newest model from Supreme Boats and if I am allowed to have an opinion, I think it is the best model river boat they have designed. My experience on the White River has been exclusively in Supreme boats, most recently the S52, and before that, a Supreme 207XP. I want to start by commending Supreme's exceptional customer service, which is why t