i think the hardest thing in twin grip is the speed, i believe u already saw osku and jason lofting the ball w/o much effort.
u should really destroy a house shot as long as u can keep up with speed
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When a house bowler misses the mark, misses the break point and strike, for many ppl its called a wallshot. When a pro does that its call adjustment
When a house bowler gets his finger stuck in the ball and fall on the lanes, for many ppl its called lame bowler. When a pro does that its called the Machuga flop! ha i like this one.