I use the Elevate TS rails to support a self-built folding ladder rack, and I've been searching for a hard folding cover that will fit between the T-slots with my mounts installed. I tried an early version of the BAK Revolver but it would not fit with the Elevate rails sandwiched in too. That experience also made me want to avoid any cover with wide/fragile extruded aluminum mounting rails that impede side access to the bed. Can you comment on the shape of the rails regarding their interference when reaching over the side into the bed, and how tight the fitment (width) is with the Elevate system in place?I wanted one that could work with Elevate TS rails, so I went with the Rough Country hard tri-fold.
$639 - $25 + tax at ReconRecovery (sign up for email for coupon) for a bit more than the Amazon/ebay ones, but less than the Bak/etc, I think its a good price point option (also, none of the cheap, hard ones can work with the bed rail/rack setups)