I would run both harnesses and bandits.Not sure if you have dipseys or inline boards.But if I was trolling with 6 rods I would use double willow harnesses on all four dipseys.On 3 setting would start them on 70 and 75.On one setting other two would have them at 55 and 50.Use antifreeze color and purple/pink blades if got them.On the inline boards would run the bandits at 50/2oz sinker then 75 and 100 more for total of 125 and 150.Put blue chrome color on one if got it.Speed should be 2.2-2.5 mph.With dipseys move one up 5 and one down 5 every 20min till start catching.Seams the keepers are deeper.Make some sweeping S turns to figure out speed.Good luck.