The lure is naturally going to stay at the peak of the arc created by the drag of the water. LongLine is right, Through a little trial and error you will be able to tell at what point behind the boat for the line to disappear into the water and the amount of bend in the downrigger rod.. You want to get a hook set as soon as possible but yet not trip the lure on the downrigger. I like the lightweight flutter spoons for stackers/cheaters because they put off so little drag.