I'm trying to learn how to use Torpedo Divers. I have OR16 clips and 12" droppers to the Torpedo. My numbers are just used for examples. Lure would be a Renosky and fish would be Walleye. Using an 8 oz Musky Torpedo. I am running braided line. I was told to put the lure in the water and let out 50' of line and attach clip. Now if you go to the chart and use a trolling speed of 2.0 it says if I want to reach a trolling depth of 50' I need 85 feet of line out. OK is it 85 more feet once the Torpedo goes in the water or would it be 35' more from the point the Torpedo goes in the water to get to 85' total in the water?