I wanted something a little more protective so I found some clear vinyl tubing, pulled the wire through it with a fish tape (you may need to lubricate the wire a little to get it to go through the tubing smoothly), and then pulled the tubing/wire combination from the front to the back of the boat using the same fish tape. Maybe a little more expensive, but water proof and may offer a little more protection. You can buy the clear tubing at Lowes.
On my boat I bought a joint of thin 1" pvc pipe. Painted it to match the boat and mounted it to the aluminum right below the rubrail . I fastened it with screws and used tie wraps that have screw eyes. It has been that way for at least 20 years and I have only replaced the tie wraps once.