Mine are somewhat similar. I used Schedule 40 PVC, six feet long, glued end caps with an eye bolt through them-no rope down the middle, clipped them onto my pack belt with biners and to the sled with oval screw links.

This picture is from a trip in 2007 to Yosemite. I now have a huge duffel bag that holds everything.

Edited by TomD (01/14/11 02:35 AM)
Don't get me started, you know how I get.