Although left-handers make up a large percentage of the world's population – estimates run from 5 to 30 percent -- golf instruction is overwhelmingly aimed at right-handers. Back when good left-handed clubs were hard to get, this was understandable; but that's no longer a problem. Lefties can use computers to "flip" the pictures that make up swing sequences in magazines, but the written instructions pose more of a problem. Fortunately, it's not hard to describe a left-handed swing.
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The Momentus Swing Trainer is a weighted golf club that, according to the manufacturer, helps golfers improve their club head speed and the consistency of their ball striking. The heavier weight of the Momentus -- when compared to a regular golf club -- also may help a golfer improve flexibility and strength. Some golfers use the Momentus for stretching when warming up. Others use it during practice sessions as they work on their takeaway and follow-through. Momentus swing trainers are available as irons or drivers.