View when installed. The center fiddle is removable and can be removed/installed with lockers filled.

Here's what it looks inside the locker (I had this open to fix the water tank). The fiddle could be taller or could be stiffened with an additional layer inside the cleats.

Here's the pieces making up the cleats for the fiddle, 3/8in marine ply, attached with #10x1 self-tapping screws. The screws take nearly no load, the load presses the fiddle against the inside of the locker.
