>>1665218my advice is to buy the right tools for the job instead of trying to find one knife that does everything half-assed. You have $100 bucks.
Filet Knife - Rapala Finlander $12
Smack Rocks - 16oz Hammer $10
Feather sticks - Condor Bushlore $55
Limpids - Mussels, Ghost Barnacles - Husky 14-in-1 Painter's Tool (pic related) $8
You will be much happier this way.