Sooo Yes!I use several different stones at times. But fine points & touch ups on water are done with diamond hone made for hooks. Hone is flat on one side , round on other w/channel in center. Sharpen hooks from sides & back.
Smallest hooks I've used hone on would be size #8. Usually larger for salt. Once hooks decrease enough in size sharpening would be pointless (no pun intended). Small guage wire will penetrate the soft flesh in trout mouths easily.