Aloha Nacho Part 2(I just saw your last post),
If you're having challenges balancing even with your eyes open, remember that you can do it with your feet staying on the ground.
Since you've just taken his level I class recently, I would think that Chunyi or Jim would have even presented it like that, rather than lifting the leg.
It's a very powerful exercise (aren't they all), so much so, that you'll not want to skip it due to balancing challenges.
Wishing you a lucky day.
Much Love, Shawn
