I bought a Blackburn Outpost system and found it to be overbuilt for the job. As a result I now just use the double end drybag that came with it. I snap the drybag buckles over the bars to hold it in place and use the red safety harness that came with the Blackburn unit. Simple and effective. It's where I store my 1 man tent.
Going forward I would just buy a simple retaining harness and a drybsg the size you want for between the bars. Anything else is extra weight.
I'll post a pic in the morning.
Last edited by Happy Feet; 02-01-19 at 12:54 AM.