I like to rig my worms 2 ways, both require a threader. I like using scented Berkley Power worms. I instert the threader in the tail and thread it through the worm, I then thread it on to the leader so the hook comes out down in the tail section. I also use straight worms (no curly tail) and rig them whacky style. I instert the threader into the middle of the worm and thread to one end. I then thread it on to the leader so the hook comes out one end and the worm hangs sideways. This gives it a really nice pulsating action in the water.