You know, the internal skeleton idea, that is exactly how a WilderNest is built... There is a molded in steel frame that is pretty strong and does not flex much normally. In fact it only deflects about two inches when it must hold up the weight of a truck, so a few hundred lbs is no prob.
'91 Pickup - Imelda
'08 Tacoma TRD - Donna
'09 Kawasaki KLR650
'12 Gunnar Rockhound 29
"Our task must be to free ourselves from this prison by widening our circle of compassion to embrace all living creatures and the whole of nature in its beauty. Nobody is able to achieve this completely, but the striving for such achievement is in itself a part of the liberation and a foundation for inner security. " --Albert Einstein