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Here is my take on it. Yamaha's articulating keel is a rudder. And probably very effective, just as fins have been. The new higher freeboard??? That is smoke and mirrors again. In 2010, Yamaha changed the floor pan liner that is the upper hull of the boat and raised the cockpit/bow floor I am guessing about 3 inches. You can see this if you look in all the compartments of the boat, they are all lowered where they originally were and only the floor of the cockpit/bow is raised up, lowering the freeboard height. So this year, to give the boat more ride appeal and big boat feel, they changed the floor pan back to the original clearances the 230 had. It lowers the center of gravity. You can see this in a 230 vs a 240 easily, look at the clearance under the fuel tank compartment of the two. I haven't seen any of the new 240/242's either, but Yamaha doesn't change all their molds and tooling a bunch one year to another, they tweak them. The 240 hull is basically the same as the 230, but they bumped out the upper bow to expand the bow seating and that didn't change the waterline hull shape too much at all, but the steps seen looking at the boat straight ahead are dramatic to add some space. The floor pan is also how they make changes without doing much, but that is a radical change from one model style to the next IMO and takes as much setup change as a hull would. They want to keep all of us interested and bring in new buyers to the family! And jetboaters.net is here to learn, and then share that info with you! There is no better expert than those that read and write on these pages.