I as well place a corky above the worm, however I jam the tip of a toothpick into
the corky to keep it from sliding down on the worm when I set hook. The worm will last longer. I also agree with Smiles, rigging a floating worm on a hook by itself is also deadly. Mess around with it, see what you come up with.

It's going to be a great weekend to be fishing!
Kev