Bryan,
It's probably more tim ethen you want to invest, but how about checking if any of the metals suppliers in the greater Baltimore-Washington area carry aluminum stock that you can get cut to length? That's actually not a complex form, and I would bet a small but solid amount of money it had an application outside MRR before Modular started marketing it. Just need to find someone with it, and figure out what it's really call.
And on a side note - trains and canoe livery; cool business idea. sorry he passed.