Wouters craft uses the same method invented by BHC (the "real" one!) in the 60's. See Phillips video at 55s in. Note how big and bulbous the bow bag is - thats to maximise the effect John describes, as the nose goes down the bag squashes outward, move the C of Lift forward and stopping the plough-in. I always admired that skirt, it works very well.
Segment skirts seem to have been developed in racing, where the poor roll stability (or good roll ability, if you prefer!) is an advantage, quite the opposite of a cruising craft.
Once we began to understand plough-in, the divider was devised specifically to provide a retro-fittable solution for existing craft. It works and doesn't need any alteration of C of G, which is an advantage. It was fortunate that segment craft have a high pressure plenum available! But as John says, the ideal is to design for the C of G to be about 5-10% back from the "normal" position and feed the cushion from the rear, allowing a "proper" rear fed curtain partition to be used.
This video brought back memories - my first craft, the white Osprey with a few orange segments features heavily/. That was after I launched my Surveyor and the Osprey went to Phillip.
Cheers
Ian