As I am sure a lot of you do the same, I use the lake map book to find a few sweet spots on the ice. Since they pinpoint the sunken islands and tell you deapths and all that noise, it makes it pretty easy to locate hotspots. Has any one used the lakemasters chip in their gps. It is supposed to give you accuracy by the foot. I never used one(nor a gps) and was looking for some input with the chip users out there.