Usual conditions (local alley):
Unregistered pattern, oil here, oil there lol.
Actually I think its more medium/light amounts, half lane length or a little over, but usually the amount/pattern is unpredictable.
Other alley where tournaments are held:
Medium length at more of a heavier amount, probably medium heavy. Wooden.
Likely conditions encountoured: Medium heavy, relatively long, various pattern.
Hope that helps a bit more.
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