I agree with LLL's post in regards to the depth of water being 25-35 with brush in there somewhere. I really like the lakemaster chip, and if you have an I pilot link, then you will be able to use follow the contour feature. Just remember to adjust the offset for the contour lines with what you actually see on the graph for depth. Once you get that you can tell your TM to go either left or right on the contour line via the graph, or your remote. Set up a few way points for a trolling pattern, and you can make a nice route to stay on. Set your speed to what you want, hit cruise control, and sit back and let it all go to work for you.