Just catching up on this thread. I don't know if fatter grips would help me but I know if I interlace my right pinky with my left index finger when hitting I have SOOOO much more control of my ballz. However I lose 10 to 20 yards on a swing. Maybe I should look into my grips.
I used this to determine which size (s) to try:
https://www.jumbomax.com/grip-fitting/