Just got a new Helix unit and was curious what chips folks around here use in there units. There are chips for individual fisheries, however not sure where there is cross over between some of those lakes and the ones provided on the western v2 chip. Would like to have the time and access in the summer to get out and auto chart some of these lakes i would like to fish, but it is just not possible for me. I am personally interested in the fort peck or nelson chip, however not sure if its a waste of money. Any info would be very much appreciated, theres allot of options!