Hey @juli0r, thanks for the videos, that helped me figure out what you meant. Definitely the approach from the second “movefinger” video. Depending on how far apart your slapped string and popped string are, your hand shape will change, with the thumb and finger being further or closer depending.
E string slap, G string pop:
A string slap, G string pop:
D string slap, G string pop:
When I slap and pop the same string, they’re stacked right over one another:
So the hand shape changes, but the mechanics / type of motion don’t need to. Does that help?