My tailbed top trim piece was really cracked and looked terrible because it stuck up and I thought about buying some of the protectors I've seen people manufacturer and offer here, but I just bought some black duct tape and it does the trick! It feels solid and looks factory from more than six feet away. If the white sides of the tape are noticeable, take a sharpie to it and make them dark!
I tried gluing it, I don't recommend this. This is where all of the yellow flakes you see came from (I failed at my gluing attempt and I scrapped off the glue).
Anyways I just thought I'd share my fix to this very common problem. No offense to the vendors selling hardware to fix this! This is just a very practical alternative.
Check out my writeup for using zip ties to attach a lightbar here!
Cheap, yet effective modding and repairs for the win!