The fins that really turned my Flow V2 on, are small C-Drives.
Actually the center is a Pacific Vibrations "J-Drive" very small... almost tiny.
This loosened up the board and made it super fun!
I also get enough drive and hold from these small fins.
I tried bigger C-Drives, both as Thruster and Quads but didn't like it, so I went smaller and swapped out the center for the J-Drive.
I love it with these fins!!!!!