I have a new to me boat that came equiped with a humminbird 1198. So today I bought the lakemaster version 7 chip and popped it in. What a piece of crap map. There are literally areas of the lake I fish that show up as land not water, circular bays that are now onlong. What the hell is going on? Even the basemap without a chip in the unit is more accurate. Is this chip not compatible with older humminbird? According to humminbirds website, it should be.
For reference, I’m looking at Whitefish lake in crow wing co. I’m going to try attaching some pics of the maps with and without the card installed so you guys can see what I’m talking about. This sucks as I was planning on using my link to troll contours, but not if the map is totally off.