Sentence:  The competitors come from as far away as New Zealand and Spain to the Lumberjack Bowl in Hayward--formerly a holding pond for Weyerhauser's North Wisconsin Logging Company--to pole climb, speed saw, <WSD>logroll</WSD>, and chop with all their might. 
Meaning of the word marked with <WSD> tags:  To roll a log in a body of water, while balancing on it; to birl.