Roy's suggestion is a good one.
Also check out the Cortez
Racing Association if you want to get involved as crew.
I belonged to Harbor Sailboats for years, they had, probably still do a good selection from
Catalina 22's up to larger 30-40 ft Catalina's, Beneteau's and Hunters.
You will need to take some of their
ASA classes or provide a sailing resume before the will let you take a boat out.
I know J Boats as a school/charter fleet.
I don't know much about Sea Forth, but their rentals always seemed a little worn out when I would see them on the bay.
You typically won't have much
wind in the summer till it heats up a bit and the sea breeze kicks in. The bay can get crowded in the summer, we usually
head off shore for the day.
Good luck and have fun.
Mike