I am interested as well. How much work to incorporate one of these into our boats (I have the X22)? I spoke with another person this weekend and he purchased a new Malibu Response with the ZeroOff from zerogps.com. He said it is a wonderful unit but came as an option with his boat, not aftermarket. Put in the person's name, push the throttle to full speed and it works like a charm. I like the idea of adding a "perfect pass" type system without cutting holes so the gps sounds ideal. I am interested to know if any of you have installed either the PP Stargazer mentioned or this unit, if it is possible with our boats, and what it takes to install.