Another deal for a timely loss

Jean de La Fontaine, a 17th-century French poet, wrote, "To win a race, the swiftness of a dart/Availeth not without a timely start."

To make a contract, the swiftness of a line of play availeth not without careful forethought. In this strange deal, South has one of the strongest hands you will ever see, and North has almost the weakest hand possible. South understandably drove into six spades. What should he have done after West led the heart king?

North's three-club rebid was a double negative, warning of a very weak hand, typically 0-3 points. South tried to find a minor-suit fit before jumping to six spades. North put down his hand with a feeling of foreboding and an "I tried to warn you" comment.