I agree on the lis franc ligament. I've blown out both knees and just had the lis franc sprain 6 weeks ago and it is still a big PIA. I think it hurt worse than either knee and knee surgery. Hard as hell to edge around toeside or land on a toe edge. If you sprained your first foot and didn't heal all the way it's probably why you sprained the other because you were compensating for the weak foot.
If you need lis franc surgery the rehab is 1 year
, worse than ACL.
Heal up and learn fun technical tricks like bs 180s and switch back 180s. you can also do a bunch of one wake 3s while your healing up.
Good luck, it's a pain, literally.
Oh, and don't kill our butter wakesurfing