Wedstrijd: Castle Rock, Castle Rock (Colorado), Verenigde Staten

• 1991
• 1: Mark Southard
• 1993
• 1: Steve Speaks
• 1995
• 1: Scott Price
• 3: Randy Whicker
• 1996
• 1: Scott Price
• 1998
• 1: Scott Moninger
• 2000
• 1: Scott Moninger
• 2: Doug Ziewacz
• 3: Christopher Baldwin
• 2004
• 1: Michael Creed
• 2: William Frischkorn