Made to be cheap, easy and quick to set up. Since we move often to live in different place, we can't possess much stuff. Moving with just an handful of bolt in our pocket is so far the best system we found. Our rear track support only 25 kg, we usually carry 10 kg/jerrycans. No problem in forest tracks either. When the jerrycan are empty, you need to put something to stabilized them (quite nosy) Since we need our backpack to shop, we put them on the top of the jerrycans, they protect the stuff from the rain, and they stabilized the jerrycans (no noise, as when they are full).
The best jerrycan are the rigid one (on the video the best one are the black one, the blue one are a bit loose).