I was talking with Stormcrow and others during Trail Days about the advantages of the asymmetric side pull out on the Hennessy design. Due to patent laws, these handy features cannot be installed directly by manufacturers (although there are work-arounds).
This mod is something I stumbled on last night, although I did find that other entrepreneurial spirits were talking about it a month ago. Here's an illustration that shows how it works using the DutchWare clip-on tarp pull-outs. Brilliant!
I have additional photos on my blog.