On my Mac 26D I used home made organizers to route all my lines down the starboard side of the cabin. I drilled through into the compartment that is directly above the sink. I had a diagram but can't seem to locate it on this computer. The hard copy went with the boat when I sold her. If you search my past posts you'll probably find it.
I also made organizers for my Venture 222 but ran half the lines down each side of the cabin top. I found that less usable since it took up too much walking space on top of the cabin.