This seems to be a soar topic with many. For me, I really don't have a strong opinion on it. As some have said, most anybody can learn the technique if they feel let down by their own "one-handed" method. When I was growing up, it was just something that kids did for fun.
Today, the Juniors are intrigued by it. They are still learning how to roll the ball properly one-handed and some have low revs so the prospect of gaining so many revs and a big hook is too enticing. One local junior is just as good and accurate with one-hand as he is with two-hands. However, revs do kick out a lot of pins so he's always a bit conflicted. Yet, he only competes one-handed.
There is a reason why the rev rate for pros is 400 on average. You either are the most accurate bowler in the world, ala WRW or Norm Duke, or you get the revs to make up for a little bit of inaccuracy. Those revs and speed definitely increase carry, no question. Whether you need 600 as compared to 400 is questionable.
Once your at that stage though, you should really be focused on learning to be more accurate.
Honestly, if it brings more interest to the sport, I'm all for it.
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