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.