I use left index for F' when its free, but otherwise i use a RFU push with right index.
I also execute U2 as U U . I can do antisune in 0.6 with this(and almost same sune,a little slower though )
Is it worth it to switch to the thumb for F moves and do proper U2 and D2 finger tricks? I dont use them, will have to practice, just asking if they will be worth the practice
Also, any other finger tricks you guys suggest, I dont really use any, just normal index for U and F, ring for B and D. wrist for R and L are welcome.