A simple bungee cord kept it tethered and out of the way.
How to tie ladder to roof rack bungy cords.
Fold the cord completely across the ladder and back around in a complete circle around.
With the third option crossbars with side rails you can secure an item to the side rails and run tie downs from front to back securing them to the crossbars.
See the gallery of photos for bungee cord tie details.
Wind the cord tightly around the leg of the ladder.
2 take an end of the safety strap and loop it down under a roof bar that runs perpendicular to your vehicle and then back up to the top of the cargo.
Use a tie down that wraps around the item and the rails.
See that a cautionary note is included on the first stair step.
I fear i am naive however.
With the cargo on your roof lay the safety strap across the width of your cargo.