First thoughts
- your analysis is pretty spot on!
- a lot of the issues are from bending at the hips and facing sideways. If you bend at the hips then try to force your knees in, it hurts! If you bend at the knees and look forward (ie turn your hips forward), your back knee comes in automatically. Dont think your back foot needs to be flat on the board - look at top surfers, their back foot is often just touching through the side of the foot or the ball of the foot, or jammed up against the footpad at an angle. Your front foot perhaps could come straighter a bit, more towards 1 oclock. Its not terrible at the moment but its more at 2 o'clock
(actually this video auto played after yours - see the guy around 2.35 - 2.50 and look at his back foot
https://www.youtube.com/watch?v=wMmtNewLjUM- sticking your bum out means you have to stick your head out to balance, and then the board is just wiggling underneath you as you try to maintain balance, rather than everything being stacked on top of each other. It also means its really hard to look forward, you have to also look sideways otherwise you are screwing your neck around. Second wave was much better in this regard
- have a look at this article
https://medium.com/@boostyoursurf/easy- ... 5c507ae307- you are pretty jerky in movements - your upper and lower body dont seem to be totally in sync - its almost like you are focusing on moving your upper body, but then go 'oh, yeah, lower body as well' . this is probably just because you were focusing on your upper body! So it will fix itself with more practice.
Knees dont really have flexibility, its the ankles and hips. Improving ankles can be hard, they have very strong thick tendons (eg achilles) more than muscle. Hips stretches you can find easily on the internet or through yoga and can be worth doing. What has really helped me is doing 2 x 20 sets of Cossack squats every morning, it loosens up the hips wonderfully (random vid
https://www.youtube.com/watch?v=tpczTeSkHz0)