Normally the clubs have practices after the Saturday trials. Unfortunately none of the clubs in our area have separate practice days. You might also think about going to some of the lira meets for straight run practices. The schedule is at lgra.org
This coming weekend there is LGRA and NOTRA in Orange County. My mom has the information. I think there is also some racing in December in Orange County. Don't know what the show schedule looks like or if these conflict with any. I do know this time of year is the racing season in So Cal since the parks are available.