I just purchased a package of chemically sharpened hooks - what type of sharpener should I use to sharpen them?

In most cases, hooks straight out of the package are too dull for saltwater fishing and should be sharpened prior to use.  Contrary to what you may have been told, however, chemically sharpened hooks are the exception and do not need re-sharpening.  If you attempt to use a stone or other sharpening device, you’ll simply end up dulling them instead.  As the name implies, the hooks are actually sharpened using traditional sharpening methods but then they are chemically etched, a process that leaves a perfectly polished point that will last quite a long time.  Use them straight out of the package and if you think they’ve gotten dull, buy a new package.  The same is true of laser-sharpened hooks.  These are actually sharpened by using a laser to remove the metal from the hook, similar to the chemical process.  Trying to sharpen them again with anything else will ruin the hook.  These hooks are also treated with a coating that will reduce or altogether eliminate the possibility of rusting.  The disadvantage to using these types of hooks is that they will deteriorate quickly if you’re using them for trolling.  You can increase the life of the hook by coating them with a waterproof grease or oil to keep the water off the hook.  Make sure you’re reapplying the grease or oil after every use.