If the water is off colored, -dirty, early in the morning,or really overcast, i would fish higher up in the water colom 60 back would be the deepest-most line I would let out to begin with, but your finder will put you in the park.one thing you won't see most of the fish that are higher in the water column at that level because of your cone Angel of your transducer. Good luck tight lines. We all second guess ourselves don't forget to log your day do a waypoint for every walleye you catch after a few trips you can look at those and rule out allot of unproductive water .tight lines!!!