Reports of boater's aggression? (8)

I believe the answer is:

coverage

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'reports of boater's aggression?' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.

This is the entire clue.

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(Other definitions for coverage that I've seen before include "Media reporting" , "level of press attention" , "News reports" , "Press reporting" , "insurance" .)

I've seen this clue in the Sydney Morning Herald.

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