I’ve fished that lake before. Many years ago but I’ve been on it. Some other pretty neat little lakes in that area. From what I remember this one can be a bit cyclical where you’ll have real strong years followed by a few that are not so great and then it’ll rebound and start over. When lakes like these are “off” you go somewhere else and leave it alone….but when they are on you focus on them and if it doesn’t get much pressure you keep your trap shut. These are at risk of being overharvested because of their size….anyway….
Here’s a mapping tip/trick that works quite well. Take the map you have and color each depth ring in with a different color highlighter marker. Once you are finished flip the map upside down so south is up and north is down…or rotate it 90 degrees either way. Basically look at it in a way you’ve never looked at it before. Put a mark on the first 3 or 4 spots that jump out at you on the highlighted, upside down map and fish there. This mapping study approach has accounted for a pretty high success rate for me on muskie lakes I’ve never been on before. You see things you didn’t see before and quite often you pick up on areas that get overlooked because they are not obvious when you look at a map with north pointing up.