On my dockstarting progress I realized that the more initial speed you've got on the start, the more stable and easier it gets. I'm assuming the same applies to a deadstart. Looks like you could give the board a little more push and make a slightly farther jump to start off with some speed instead of sort of just dropping the board into the water and landing on it with almost no forward speed at all.
The surf start works also from moderately low but is not ideal to learn to pumpfoil... ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-EEgEOOgcj7U.html
