I think the best set-up I’ve seen, was a set-up that put them all on a board that sat in a chair mount on the back of the boat so it could easily be taken off, all holder were screwed down to the board and spaced quite nicely. For me that would be about perfect, although I don’t troll a ton, and fish the river maybe 40% of the time. Right now I have two holder mounted up front in the bow area of my boat, and I just added a mounting right by the driver’s seat, so I can troll and have quick access to atleast one rod, the other is on the other side of the boat, works good for 2 rods, but I think once you go more, you need a board or something on back to space them out, plus I wouldn’t always want them one the back, so removability is a plus in my book. It would also put the rods high enough up to keep the butts of the rods from hittnig the floor or whatever. I bet using planer board would open some options up too.