My boat has line hangers on the aft end of the cabin for the halyards and control lines on the cabin top. They have been there since the boat was new in 2001, and the only maintenance has been to replace the original bungee cords, which fell apart. with much more durable parachute cord.
There are many more lines on my boat, and I admit some of them were in a jumble of lines in the bottom of the garage.
Tangleberry, our Hanse 371, has a gigantic cockpit locker on the starboard side, which we call the Garage. Originally it was difficult to use, being deep enough to stand in. We built a shelf at cockpit sole level, which provides a place for the dinghy, outboard motor, and the spinnaker, and a few more things. There was no dedicated line locker, and lines placed on the shelf work tend to end up underneath in the garage, out of sight. There was a factory installed, narrower shelf high up and outboard in the same locker. I keep the oars there. The edge of that shelf provides the ideal place to place line hangers and make a dedicated line locker literally in thin air!
A search on the internet turned up nothing purpose made and the local marine store didn’t have anything suitable. So I improvised. I found these stainless steel hooks and ordered them. A pack of twenty was more than I needed, but at less than $2 each it was a great deal. They arrived in two days. I didn’t use the included mounting screws because, although the hooks were stainless steel, the screws were plain steel. I had a box of #6 x 3/4 Robertson screws on hand and those were perfect.
I also had parachute cord. I estimated the length needed (forgot to measure it for readers, sorry). It was about 16 inches but verify it for yourself. I cut several lengths and burned the ends.
I attached the first hook using an electric screw gun, bottom hole first leaving it loose. Then I put the two ends of the parachute cord behind the hook above the first screw, so the ends just protruded. Then I drove the top screw and tightened the bottom one.
I put three more beside it. I stll have 16 left. I might us some in the interior as they are quite sturdy and well finished. If you have your own solutions, let us know in the comments!