Full disclosure - I know nothing about fins...so my baseline is essentially a zero. I ride a DW Neo right now with the stock futures.
That Grom John fin set is rated as "balanced" with a 6.5. Would wakesurfing not learn toward the higher numbers? I would think we would be looking for speed generating and trying to get closer to a 10 rating. Is that not the case? Again, I'm just spitballing and learning here. I never put that much thought into the fins TBH.
2007 XLV Gravity Games Edition
340HP CAT/ETX
ACME 1235 / Fresh Air Exhaust
1180 Front, 1100s Rear, 400 under Surf Side Seat, Homemade Suckgate, Custom Surf Platform
Slingshot Hooke, Doomswell Neo, Phase 5 Hammerhead, Parker Surfcraft Phantom