Dave Neuman and I recently played in the Santa Rosa Sectional.  Board 7 from the morning session was a solid victory for a big club system combined with losing trick count.  
Dave and I play Precision.  An opening bid of 1 Club shows a hand with at least 16 points if unbalanced or 17 if balanced.  Dave opened 1 Club with 
♠ J3
♥ AK3
♦ K95 
♣KQJ95
The next hand came in with 2 Diamonds.  I held
♠ AQ95
♥ QT964
♦ void
♣ A764
I bid 2 Hearts, game forcing with 5 or more hearts.  Dave jumped to 4 Hearts, showing a minimum big club bid with heart support.  Now I saw a 5-loser hand opposite a big club opening, which is usually a 6-loser or less hand.  Eureka!  No more than 11 combined losers, good fit, void in opponent's suit.  This added up to a likely slam, so I just bid 6 Hearts.   As you can see, it made easily.  All I needed was to draw trumps and not lose a trick to the jack.  12 easy tricks, just lose a spade.  For this result we got 16 matchpoints with 17 top.  
Good luck!
