The plastic clip (front retainer clamp) on each side attaches to a bolt (steel coach bolt) that slides along a slotted track in the actual cover (in the 6" section closest to the cab) rather than attaching to the side brackets. Thus, when removing the cover the clips just have to be loosened and then they are slid toward the center of the cover. The cover and the clips can then be removed as one unit. I have my cover removed, sitting on the garage floor, with the clips still attached to the cover. Will be re-installing tomorrow when I get my RL back from the body/paint shop.I might not be following you. What's the advantage of the Ultra Flex's plastic clip?
https://www.amazon.com/Stainless-Sq...8-1&keywords=round+head+bolt+with+square+base