HARDTRAILZ wrote:....
I could easily secure 2 or 3 milk crates with one strap on my flat rack. They would be secured well actually. Sides are not needed. Are you letting the crates slide into the walls or how do you think the walls secure that load? If they are along the rear of the rack, what keeps them from sliding forward when braking?
Sounds like you don't need to be more dilligent and you are securing your load well, but sides are not why.
Just the way things are packed helps keep stuff from moving around too much, the walls are just added peace of mind.
I'm sure one strap would be fine on a flat rack as well I just feel better knowing the walls are there with only one strap.