Ask HN: Best Practices for Remote Hackathons?

I took part in a remote only multi-day hackathon and found it hard to collaborate as in a on-site hackathon and keep sane during the long hours behind the screen.

What experiences have you made with remote only hackathons? Which worked? What did not? Especially if you don't sign up as a team but where teams form at the beginning of the event so you work with new people.