Jim Mayfield became interested in boomerangs in the mid 1980s. He used to travel to boomerang tournaments to compete and collect boomerangs. Jim learned how to make his own rather quickly. He began manufacturing his own boomerangs at his Gunnison Colorado home in the early 1990s. A few years after forming Colorado Boomerangs, Jim sold his company to Richard Pollock-Nelson. Jim worked with Richard after the sale to make sure that the quality of Colorado Boomerang products remained high after his departure. Jim Mayfield was critically injured in a motorcycle accident on 11 October 1999. He died of his injuries on 24 October at the age of 48, leaving a wife and four young children. Today, Jim's business is still running strong, even though Colorado Boomerangs is on its third owner.

This hook is the original design of the boomerang that is currently called the " Kilimanjaro Hook ". When Jim made this boomerang in 1992, it was a variation on the famous Gerhards hook. Jim's name for it was just " Hook " and he wrote this on the underside of the lift arm with a note that this particular boomerang was made special for Ben Ruhe. Jim also signed and dated this boomerang on 8 December 1992. If you compare the current Kilimanjaro Hook with this older hook, you will see that the planform is identical and the weighting (two lead weights in each blade) is also identical. However, there are differences in the airfoiling and this is key as to why the Mayfield manufactured hooks were in such high demand in the early 1990s and why they are such good collectables today. This boomerang is in mint condition. I did test throw it several times and it has quite a range and it does fly quite well. This may be one of the few remaining Mayfield manufactured boomerangs in mint condition. It is quite a collectable.