The Coroplast wasn't secured to the middle support...you can see air between the support and the Coroplast! The sections between the middle support and the main outer support is where the Coroplast was being pushed down. Kinda hard to shoot the right picture at the right time as it was happening. I heard what sounded like flapping and then bumping sounds...that's when I looked in my rear view mirror and saw my hatch caving in. I backed off the gas pedal pretty quick and safely looked fer a side road to exit to. At the same time, pull out my camera, point it backwards and run off a few shots...
The new grid support seems to have eliminated the flexing now...came across some severe gusts and the Coroplast didn't flex down like it did before...and this is with only 1 sheet of Coroplast on top! I might laminate the top with another sheet using some 3M Super 77 spray adhesive and some screws to keep it in place. Fun will be trying to line it up as it will stick as soon as I stick the sheets together...no sliding around.
Currently hot gluing all the seams down where I had taped it before. Hopefully it will hold up over time...
