I have the Sailing Dynamics Instructor, Advanced Racing Simulator, and the Sailing Tactics Simulator. I highly recommend them! You can sail any type of boat and can adjust the race timing from as slow or as fast as you want. The simulators also give you suggestions for optimum boat speed (if you request it), and allows you to "freeze" the action and make adjustments. I have to admit, they can be addictive! <br><br>