What is the major benefit of the chips over the base maps?
I found you can add waypoint info like reefs in manually, and am using the hook-n-line map for the coordinates. It is a slow and tedious process, but I think it would give me much of what I was looking for with the Navionics chips... You can also save to the card, and upload from the card which is nice. I haven't figured out how to enter the info on my computer then upload (i just have the Elite 5 and not the HDS) which would save a lot of time.
I get that there is an overlay, and more detail regarding depths with the Navionics, so I'm curious what the biggest reasons to buy the chip are? I wanna know what I'm missing