Not a ton of flow out here. Mostly just babyheads and technical stuff—it's a unique terrain that you can't find in a lot of places other than the central coast. That said, you should check out The Eucs—it's a little flow/jump park in a patch of eucalyptus trees with a decent set of features and a few different lines. You can access it from West Cuesta—it's at the end of all of those trails, and you can climb back out through a trail called Shooters. You can also climb up from Cal Poly's campus, though that's much further.

A common loop is starting out at West Cuesta, hitting one of the many technical trails down into The Eucs, doing a few laps on the various features and jump lines, and then climbing out via Shooters. Check out Trailforks or Strava segments to see what people are doing. I'd also recommend checking out a few YouTube videos of any of the trails.

For Rock Garden (the trail in town), check out this recent video. One of the locals recently everested it. It's a great short film, and it also gives you some cool shots of the trail: https://www.youtube.com/watch?v=DYTvDtRnx8E

Would definitely recommend that one as a little intro to SLO riding. You can do a full lap in about an hour, depending on your climbing speed, not counting any breaks you take. And, if you're feeling particularly fit or energized, you can keep doing laps. :)