I believe it is the gap on the sickle that catches fish I don't think it is how sharp it is you can take a saying wire on a basic jig hook and open it up and you will catch just as many fish the reason why you are not catching a lot of fish on a common jig wire work is because of the gap is so close to the body of the hook if you would open it up a quarter more inch you will find that you will catch more fish myself I do not care for sickle hooks though I do have thousands I still don't like them. it just my two cents worth guys