Need/want an aluminum topper for my F350 for when I need a topper. I hate toppers in general, but I run into enough situations where if I had a topper I wouldn't have to drag the enclosed trailer around.

So I want something I can just throw on (by hand if possible with my son's help) and then clamp on the bed; no permanent hardware. The truck normally wears a bak-flip cover, and ideally that could stay on with the topper, but I could be convinced to take it off when putting the topper on.

Want to spend as little as possible, but I'd likely be looking at new or slightly used.