For Hive freewriting, I take “five minutes” as a suggestion, not as a rule. I do them only sporadically, and, as opposed to when I first started doing them, I edit before uploading, thinking of what I first write as stream of consciousness as no more than a shitty first draft à la Anne Lamott.

It's been three months since I did one but FWIW, I think that editing made it better than the first draft that was pretty weak:
@preparedwombat/freewrite-writing-prompt-day-2517-fashionable-cowboy