Waves are firing! No car? No problem!

Sunnyvale to Santa Cruz: public transportation is very convenient.
Caltrain: any. $4.5 one way.
Express 17 bus: day splash pass costs only $14, including VTA rides and Santa Clara County local buses rides.
Then Cowell Surf Shop provides rentals:
Board: $35
Wetsuit: $10
Bogie board: $25
Return before sunset.
Or carpool with a friend like I did for Pacifica!