Nice video. You are really well on your way! Congratulations! Here is a couple of things that I would try:
- Hook in: it will stabilize the sail. which is now moving quite a lot and your arms must be getting tired doing all the work. I admire how long you can sail without the hooking in! but you need to anchor the sail with your weight.
- Front strap only. In the beginning I went all the way: both front and rear footstraps and hooked in, and there was too much going on for me to understand what was happening in order to control. So I took some advice on this forum and started sailing with front foot in strap only, and hooked in. My back foot was free to feel and experiment, and try to learn how to shift the weight forward. It really helped me. I can see you already doing lot of front strap only, but it should be with the hooking in.
- it looks like you are too much in 'windsurf mode' i.e. leaning out to the back, and far out. Try to stand more upright AND shift weight forward. If your nose touches the water too much while moving forward, try to move the mastfoot a bit to the back. Its important to find your own balance in terms of mastfoot position. And it will shift over time as your own style and weight distribution is also moving as you get more comfy.
- It's important to shift weight forward so that the board flies horizontal/level after take off. That way your front wing doesnt pushes against a mountain of water, and keeps stalling. The front wing needs to glide over that mountain of water (rather than against it). Its something you can almost feel... that the wing underneath becomes slippery. Beginners often can take off easily, i.e. board goes up, make some speed, but then they keep foiling with the board pointing 1-3 degrees up (i.e. still in take off stance). While the foil does generate lift, but also lots of drag... drag reduces speed, and the foil loses lift. And you touch the water again. When you learn to shift your weight forward, and stand more upright, and your sail is also more upright, the board levels from those 1-3 degrees to 0, and then the speed kicks in. Speed = lift. Lots of speed is so much lift that you can even point your nose -1 degrees. In this zone you also get nervous because you know that if you go -2 degrees you can plunge into the water!
- feel the entire underside of your foot against the board: when i get in trouble, a bit all over the place, I try to focus on feeling the board with my feet. I try to feel the whole surface, where I stand on the board. As I do this I start to feel every micro input the foil and board are giving me. It just helps you to become more active and aware instead of passive and letting everything to happen to you in that moment.
These tips by Sam Ross really helped me to be more relaxed while hooking in
Hopes this helps a bit and enjoy the journey to longer and steadier flights!