It's a big thing right at the moment, think of it as single length clubs for bowling. It's being used by a few on tour ( actually winning too) and it is gaining a lot of popularity because it allows for more power to the vast majority of people. I usually throw one game this way every time I go, it takes pressure off my wrist and shoulder, as long as your feet are good, it works! I don't really give a rats arse about bowling anymore, but if I were to get back into it "seriously", I'd be doing it two handed. I was a 200+ average for years, have a 300, all one handed, but it's an advantage to have that raw power at the pins. I can get more than most with one hand, but 2 puts me even with the best. Controlling it can be a trick, but I've had some solid games with it, just dabbling.