Rags & ropes, was not a common US armor method of camo, if ever used at all. The Brits used something similar (hessian netting), but US tank crews usually used foliage branches. Some units had “summerfield matting”, a type of chicken wire, attached to the hull and turret for just that purpose. And the glacis plate would be one of the first areas to be covered, especially that white star. Painted out, covered in mud, whatever. We had air superiority and marauding Luftwaffe aircraft in the daytime was rarely an issue. But concealment from the front and flanks at ground level was a priority.