The Fillet Knife.
I myself am not a big fisherman however we have had many people enter our shed in the past 5 years who are. The request (question) we most constantly hear is - "Do you have a fillet knife."
It took us 5 years but it's finally here.
We've tried to get the bendy nature of the blade and the sharpness edge to take this fillet knife to another level. We enjoy hearing back from the fishing tribe.