Thanks for the ideas. I decided to go the cheap route for now and built them out of pvc conduit. Went out yesterday and they were flawless. Good protection for $15 and no more hanging rods over the stern hoping they don't get broken. Now the only challenge is finding a better way to attach them to the frame (other than zip ties, bungees, tape, etc.).
I'm thinking of making a bracket similar to a U-bolt because I still want to be able to remove them if I'm not fishing. Any other ideas?