Final answer:
Jim Smiley, as described by Simon Wheeler, is a gambling man known for betting on anything possible, displaying versatility in his bets and often winning.
Step-by-step explanation:
From the passage given, the description of Jim Smiley by Simon Wheeler highlights that Jim Smiley is a character with a strong penchant for betting on anything and everything. Jim Smiley is depicted as a gambling man who is not only willing but eager to bet on any event, irrespective of its significance. Whether it be a horse-race, a dog or cat fight, or even two birds sitting on a fence, Jim Smiley is ready to wager. It becomes evident that Smiley has an unwavering commitment to gambling, taking pride and showing great enthusiasm in his ability to place and win bets. His character is marked by his versatility in betting and his exceptional luck in turning out to be a winner more often than not.