Existential Angst wrote in
rec.crafts.metalworking on Sun, 15 May 2011 09:20:16 -0400:

You could carry a couple hunnerd pounds of 20-25 footers with a supported
roofrack, and have the rest cut to 8-10 ft, and fashion a "bed extender",

I've seen a cargo support that goes into a 2" receiver and supports
overhanging loads.
--

Dan H.
northshore MA.