Just wondering if anyone has any experience with making an exterior rod tube for their vehicle. I like the idea of the commercial ones, but not the expense. I was thinking of making one of pvc piping with a small diameter linking to a larger diameter, so I can keep the reels on. The only reason I haven't made one yet is I would like to put a lock on it somehow, but don't have any ideas on how to do that. Any suggestions, plans, do's, or don't do's?