Box covers - flip/fold vs retracting and btw 2 rams

ask and ye shall receive. I own an undercover Flex for my 6.5' bed. I like it. Here's some photos of it in the locked-up position and forward folded position. Only issue is that I think I'd have to either have it in the locked up position in order to use a 5th wheel hitch with it. Or I might get away with something that uses a rearward facing locking bar. It's really close. But the whole tonneau is removed via 2 bolts, less than 5 minute operation really. However, my Flex has frozen to my tailgate in freezing rain and it was a lot of effort to open my tailgate. The good folding tonneaus are between 750 and 850 bucks (bakflip makes a nice fibermax line of folding tonneaus which I really like, you can probably use a 5th wheel hitch on a short bed with that think in the folded forward position) :