How many letters does the top answer for “rotating a log rapidly in the water (as a competitive sport)” have?

The most common answer is birling (7 letters).

Crossword clue: rotating a log rapidly in the water (as a competitive sport)

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

birling 7 letters wn-def

rotating a log rapidly in the water (as a competitive sport)

logrolling 10 letters wn-def

rotating a log rapidly in the water (as a competitive sport)