Here's a better 'flexible' cover system that has been put through real 'tests'. Beginning to see many flatbed tarp systems that is both aero smooth and can conform to desired shapes. The proven tarp materials, rolling systems, cross bow structures and even the sliding curtain solutions are all applicable for all eco-modders' idea box.
This company even has custom tarp applications/innovations service.
http://www.slidingtarpsystems.com/pdf/LCS_LOOK_USA.pdf
http://www.slidingtarpsystems.com/pd...IDEKIT_USA.pdf
http://www.loadcovering.com/recreati...ercoverusa.pdf