A good knife works wonders, I have a 7" W�sthof filleting knife my wife got me a couple of years ago for father's day.
My wife got me the same knife for my birthday or father's day a couple of years ago too. Nothing like it. I've been filleting fish for almost sixty years and never had a knife like that. Handle it very carefully, right out of the box. Fish come apart very easily for that knife.
