If you have a Point 1 or Steadycast heading sensor hooked up to a 126sv ultra, can you choose the heading sensor as the source for heading and still use the units built in GPS for position?
For example, the heading sensor is mounted on the transom and I want to set waypoints using the unit on the bow. I don't want them to be 20' off, but I do want the heading sensor to keep my map from rotating.