I thought about doing that, kind of like the bubble walls. That's exactly what they use, just a piece of airline tubing with holes in it. I don't see why it would not work. You can get hard tubing in larger diameters too and could poke holes all over it with a hot pin or something. I sure would like to try that one of these days when I get any free time. Oh yeah, I don't get that. Darn!