Tie down the boards lengthwise and widthwise similar to how you d secure a mattress.
How to tie pipe to roof rack.
In the case of a naked roof you should be looping the rope through the car through the doors not the windows and around the object on the roof and a towel or blanket should be used to protect the roof of your car from the object.
Roof racks have been known to fail at high speeds with lots of updraft so take the extra precaution of tying the roof rack down to the roof of the vehicle as well.
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 ratchet or cam straps to tie the roof rack through the doors not the windows.
Next pull the long end of the strap under the crossbar on the.
Lay the pipes from the front to the back of the vehicle so they re more aerodynamic when you re driving.
Remove your rack when not in use to avoid the added weight drag and noise.
Stack them on top of each other neatly so they won t slide around.
Center the pipes so they rest on top of the rack evenly.
On each side of the roof you ll see a rack that runs the length of the roof of the vehicle.
Use a tie down that wraps around the item and the rails.
Stack the pipes vertically across the roof rack.
With the cargo on your roof lay the safety strap across the width of your cargo.
Leaving your rack on all year will increase the price you at the pump.
The second option is the side racks.
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.