I just started trolling this year. Went on Charter yesterday to get some info on how it's done. We ran 2.5"-3" spoons on the big boards behind mini dipseys between 55-20' leads. We also ran two spoons off down riggers and two off bigger dipseys at the stern.I think these were 30-40' leads. I have trolled before but not on my own boat. Seems most people use big boards but, they are a bit more expensive. As for line tangle set the furthest line the longest back and when one pops off allow it to trail to the back of the boat before reeling in.