That’s it, hold it down while you move your foot ascender foot up, hang from your hands/arms (not your climbing system) while you bring the half hitch foot up, keep the toe up so the rope flows through and doesn’t come off the end of your boot. Put the half-hitch foot right next to your foot ascender foot, tip both foot ends down a little side-by-side, stand up, rinse and repeat.
Like anything you haven’t been doing it’s super awkward at first, once you figure it out it gets very smooth. It’s less quick than rope walking and foot locking the tail but very reliable with great hip, knee and foot ergonomics. When you stand up on it feels like you’re on a well planted stepladder it’s so solid.
First push from the ground tend the half hitch with your hand at about 10’ off the ground the tail weight takes over and tends the half-hitch foot slack
Not a competition technique but could be for relatively short “air” ascent moves where putting a knee ascender on and off the rope would slow you down more.
-AJ