Direction varies because of the lake currents. If your spoon in running right at 2.5 and your trolling with a 1.5 current your lure speed is 1.0. Lure dosen't work right , no fish. Go the other way now your going 4.0 To fast for that spoon , no fish. Thats what makes the downspeed units so important on the bigger waters. The currents off 9 mile are wicked at times This should be over in the question section, maybe one of the MOD. can move it and get you some more answers.