Here are the planer boards we run on our boat - really easy to make and a fun project for when you are off the water:
If you look close you can see that there is a Big John Planer Reel on each side of the hardtop-mounted rocket launcher. The lines run up to the front of the handrail on each side of the hardtop and then out to the boards.
Here's how we run our rods. The downrigger rods use the rod holder on the riggers. Then we run another boat rod straight out from the side and the front three holders run to the planers.
Hope this helps.