We used to have some hills like that around SoCal. All gone now.
Dockweiler is nice, and it's good we still have it, but those bigger training hills were fun to fly and in higher winds, to soar.
Norco, Little Mountain, Vineyard Rd. Thousand Oaks (Pederson RD) etc., etc., etc.
Frank
BTW - My avatar photo is at Vineyard Rd., San Marcos.