Grabbed my drill and started punchin holes. and glueing magnets in place.
There is alot more to placing magnets than I had initially thought, You want to keep the polarity on all spots the same, so i can swap planks and i dont have to think about which plank goes where, and what not.
I also got a little over zealous when drilling, ended up having to clip tiny slices of plastic from my sprue's to fill the holes so the magnets were flush. That was actually a nightmare.
In the end everything turned out as I had hoped. I think the planks turned out great.