Rancho had no trees and originally was much more expansive, utilizing about 180 acres, but it eventually gave up about 60 acres to the driving range, par three course, sports fields, tennis courts, rec center, pool, playground, basketball courts, archery range, pétanque courts and picnic areas.
Hillcrest joined the SCGA in 1921 and the article from June 1921 mentions Hillcrest (which was also designed by Watson) but I haven't confirmed that it was open for play in 1921.