I added a heading sensor to my 859 at the bow of my boat. I turned on the GPS and made sure that the heading line didn't jump around in the location that I have it installed. It is currently sitting about and inch away from the cables running into the graph. When I took it out to the lake, everything seemed kosher until I started to move to a new spot while still sitting at the bow. My track line was way off from the heading line. I used the heading offset setting to correct the heading line to match the track line when navigating straight. It was something like 27 deg, 30 is the max offset and I was almost to the end of the slider.

My question is, does that indicate I need to move the heading sensor to the other side of the bow to keep it away from any interference? My heading doesn't jump around but it seems that it may be skewed to one side or the other. I have it in between the graph and the trolling motor which I like so it keeps my transducer right under my GPS location, but since I usually mark waypoints from the transom unit it really wouldn't be that big of a deal to have it 2.5 feet off considering I would still be sitting over top of my waypoint.

Thanks for yalls input.