If you are running anywhere where you will encounter weeds I will set my planner boards as shallow as you need to be to always avoid weeds.
Pike and Muskies will come up high in the water column if they are interested and if you’re running your board lines into weeds the time you spend with your lures out of the water is much more of a negative than making them chase a high running bait.
When I am fishing weedlines I typically will determine my lure distance back based on the height that weeds top out where I’m fishing and which side of the boat the lures are running. In your scenario I would run either large trolling spoon or a super shad on a very short leash (only 10-12′ behind the board) for your inside most board, I would run a super shad or similar back 25-35′ on my inside non-board rod, run a long line with a spoon 100′ back straight behind the boat, another Shad or similar back 45′ on the outside boat rod, and then set your outside planer board rod at also about 45′ back.
You may want to start with less than the full 6 rods until you are fully comfortable running boards but if you want to get an additional 6th rod out I would either run a lure 20-25′ back right in the prop-wash or run a second board out on the outside of the boat.
Spoon are great for staying high and over the weed tops, but if I was fishing in open water I typically will replace spoons with crank baits and run one right in the prop wash… I’ve caught multiple pike and muskies this year no more than 20-30′ directly behind the boat.
Will