Regarding Garmin's Shadow Drive. I pulled mine out. While it worked on Midnight Flyer, with the stiff steering issues I've had on C-Traveler, it hasn't worked properly on this boat. But even if I get that issue resolved, I'm going to leave the Shadow Drive off. The way it works, if you have your autopilot working, if you need to steer around something in an emergency, say a floating log, or other obstruction, the shadow drive will automatically pause the a/p until you have held a straight course for a set amount of time, at which point it will reengage your autopilot in heading hold on that heading. I would prefer that the autopilot go back to the original heading or route/track course that it was following. Without the shadow drive, you can still steer around somethiing in an emergency, and until you hit the standby button, the autopilot will just continue to try and steer you back, but it won't overpower you as long as you continue to steer. So if you use the Shadow Drive, just don't forget to re-engage your course if you were on a route or track. Colby