While trawling is more idiomatic, trolling is also a verb, and actually quite similar: it's fishing with a moving vessel except that it uses lines rather than n

While trawling is more idiomatic, trolling is also a verb, and actually quite similar: it's fishing with a moving vessel except that it uses lines rather than nets. In my headcanon, trolling is a slower, less directed process. So I might idly troll for bugs to fix on a bug tracker, rather than a trawl which would aim to gather everything matching some criteria.