I use crock sticks to maintain the edge on my fillet and kitchen knives. Maybe once a year , If I let one get really dull , I use the
work sharp.
anyone out there old enough to remember the " Apollo stone " set of crock sticks ? I keep one at the boat house and use
it every time I clean crappie. the old wood handled Rapala fillet knife I use is at least 30 years old , maybe older. I have bought
a half dozen new fillet knives , but always go back the the Rapala .
good luck , your mileage may vary
MO