I used the tire method and wrapped the cylinder in a blanket as well. Protects it from rocks no other flying debris. I then used to ratchet strips below the cylinder and above the base to secure it to the tie downs in the bed of the truck. I had to leave the tailgate down as the box was only 6 1/2 feet. Even though it was tied down, I still kept glancing in the rear view mirror about every minute to make sure it wasn't sliding. LOL. Longest 450 miles of my life.

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