Definitely check Chula Vista, they advertise that space is available. Waiting list for slips > 50'' is 9 years in some marinas in So. Cal., Good Luck ! Also check The Log (www.thelog.com) it''s local sailing free paper in So. Cal. check advertisers for marinas. This is webpage with links to many marina in SD : http://www.thelog.com/special/specialview.asp?c=78406
Welcome to Calif., if you can find a place for your boat you can sail all year round. The next 2 harbors north of SD are Oceanside and Dana Point, both rather small.