Your map made the best out of a bad situation. My buddy’s boat motor blew out on the first day of a one week trip. Had to use a boat from the lodge without a depth finder or trolling motor. Just using the map and a hand held GPS we were able to catch enough fish to eat and one personal best Walleye.
People who had been fishing this lake for decades say they don’t remember it being that slow. Your map saved our trip. Now, could you make maps for more lakes in Minnesota? Maybe start with Sand Lake up in Itasca County?