I have a lake I need to offset when I go to it. after coming from another lake and it gets to be a pain.I was playing around with a recording and noticed my tracking wasn't where it should have been.During the recording ,I waited until the Icon got by a good reference point and went thru the offset procedure and presto,every thing came into line.I haven't been back on the water but if it holds true,it would be allot easier to set up the offset before I get on the lake.
take it for what its worth.no guarantee's
Bob