If you have ever fisher a crank bait and put it in your box wet you know that the hooks will rust very quickly then you need to replace them. Crappie have a thin soft mouth and hook very easy so most any treble hook will work, BUT I may use my cranks for other species of fish so I have started buying TRIPLE GRIP TREBLES. Their design allows them to hold better much like a wide gap bass hook. I just bought some from BPS and since it is cold today I am going to go through my cranks and see which ones I need to replace, I hate to miss a fish, any fish, because of a dull or rusty hook and rusty hooks don't sharpen well.