That made me laugh! If you think "That is the way its done overseas" I suggest you do a bit more research. Its on one lane because it makes setting it up at its current location a lot easier and also means you can get the crowd closer.
In any other tournament a pair of lanes is always used. Bowling is the same in 99.9% of events all over the world. These are just one off events,they are not "Sanctioned" events such as those which would include tournaments run by the USBC,FIQ,EBT,BTBA etc.
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I would have got away with it if it was not for those pesky kids (Behind my lane) and those blasted 10 pins.