A lot of people use the blue 1" cable conduit from HomeDepot, and for some reason, every home depot in my area is showing a stock of 4 or 5 rolls and not a single home depot could actually locate the items. I finally found some 1" black lightweight conduit on amazon.
I ended up punching some 1.5 inch holes in my ribs to accept some locking grommets that I ordered off of McMaster (5269T62). On top of that, I had ordered some nylon 1" cable clamps from SteinAir to lock all of the conduit along the ribs.
Sorry for all of the fiberglass dust. You can imagine the other section that I am currently working on.