What's wrong with bumper sewer hose storage???

The rear bumper and its snug fitting caps are one of the few well put together items on my TT. Even though the end caps have square holes for ventillation, not a whole lot of water gets in - and it will take a lot to decompose from rusting. If my hose gets pinholes from rust, I'll use it as an excuse to buy a new one. I think the mods made by otheres in this area are ingenious, just don't need them in my case.