I do not have axius. I want an indicator because when coming in to dock I am always steering until I get close. Then I always have to be going forward momentarily to make sure I am going straignt and looking at the emblem in the center of my wheel. I always dock with my shifters. Sometimes though when coming in I have to momentarily move the wheel to correct something. I would rather be able to glance at a gauge and position my drives quickly to continue docking rather than having to go in forward again when in tight quarters. It will just be helpful for me. And for $500, it will be a lot more useful to me than my mph speedometer which I NEVER look at!! It will be mounted in place of that which is the only spot left on my dash to add anything. I have a speed in knots on my gps which is all I use. I will simply be using a raymarine st60 rudder indicator which will match my depth sounder and a rotary transducer. I haven't done it yet but will be in the next few months. It will be simple. As far as I know, I just need to plug the seatalk connection into my depth sounder and it will get it's power from there. I believe that the dimming feature on either gauge will control both once connected. Then all I have to do is run the transducer cable to the engine compartment, and mount the transducer somehow on the back transom in such a way that I can connect the linkage to the steering ram and adjust it to read correctly in all positions. I may have to make some kind of stainless bracket to hold it. Time will tell. Will try to post pics once done. They also make a linear transducer. I'm still not quite sure which one would work better but I think the rotary is the way to go. You definitely don't need autopilot to do, don't know why they would say that. There are also many other styles of rudder indicators out there but I think the raymarine is the nicest and by matching my depth sounder I think it would look nicer than any of the others.