One thing I forgot to metion, but assumed you looked at by your original post. Weight placement is critical also. The Taipan really slows down if you do not keep the transoms clear. In certain conditions you may have to almost exagerate your position on the boat to keep them from sinking. If you hear or see water gurgling up in back you are to far aft. This will be different position for you relative to someone weighing more.
Just something else to note.