I haven't come across any other specific forums that are directly associated with the SCCA Track Night, but there are a few automotive and motorsports forums where you can find relevant discussions. Some popular ones include:

• TrackMustangsOnline: This is a Mustang-specific forum, but they have a great track night section where a lot of people share experiences and tips.
• Grassroots Motorsports Forum: They have a pretty active motorsports section, and you’ll likely find Track Night discussions there as well.
• NASA Forums: Though more focused on NASA events, some people there also participate in SCCA Track Nights.

If you’re looking for something official, it’s always worth checking the SCCA website or reaching out to their community page for further recommendations. You might also find specific Facebook groups related to Track Night events in your area!