The 4-fold on my long bed was so heavy that, as I got older, it became a giant PITA.
The kids gave me a Pace Edwards retractable as a birthday gift and it is great. Fits perfectly. locks in any position. And is manageable with one hand.
I put a plywood partition across the bed ahead of the hitch rails and can lock the cover at that point, giving me a (mostly) secure truck box for setup gear.
(I know somebody could rip through the plywood, but if they are going to that much trouble they could rip the tonneau off.)