I have to say I am extremely frustrated as I failed in my attempt to pull wire on my 2018 Z-520L.
I had my boat built with Humminbird Solix graphs, what I know now is they are notoriously power hungry so I finally had some harnesses made somewhat like the Sea Clear stuff we have seen here. I was able to get my fish tape from the console to the back, that one is done but try as I might, the fish tape could not/ would not go from the bow to the back.
I tried every tube, even some creative methods but a total fail as the tape would get to the back (I could hear it) but not through