Looking to add a rod or two
By adding a snap weight behind the lead core/mainline connection, greater depth can be achieved. I have found that each ounce of lead (either lead core or snap weight) gets me down 5' per ounce at the speed I troll.
This setup up works for salmon, trout & walleye
mounting the two in front of the windshields helps open up the back of the boat plus you can send them way out to the side from the front
I would try for this at a minimum: - 2 downriggers (sternward most rods) - 2 dispy diver rods (braid line) - 2 holders to run lead core/copper on side planers