If this helps, I use this rule of thumb on downriggers. The deeper I go the closer to the weight and shorter leader of 10 to 12 lb fluro. The higher up I go the farther back from the weights i.e. 60 down 15 back , 40 down 30 back 20 down 60 to 80 back and longer leader up to 20 feet. But! The fish dictate this most days. Some days the lure is 8 feet from the weight at 60 , 70, 80. Other days 20, 30. You have to see what they want not what you want. Sent from my SCH-I545 using Lake Ontario United mobile app