Casting Eggs - what do you think?

[Moses]

Originally Posted by baldwin

You can get a wooden darning egg at a craft store, drill it through. Run some leader through it, with a swivel tied to each end. Put a small piece of finishing nail in it to hang the hook of your fly or small jig on. This will aid in aerodynamics. When the egg hits the water, the jig falls off. It delivers flies or small jigs to imitate small bait when they're being eaten by fish a long cast away.

I'm confused? Can you explain further or post a pic? Once your jig/fly/teaser falls off, what is it attached to? What about the egg?