I've fished it a couple of times around the launch ramp area and also further down the road to the last parking lot area.
One thing about Piru is too make sure you always have your radar on for big critters if you get too far away from that last parking lot.
I've seen some pretty big bear tracks around the shoreline and the animal proof cans in the parking lot are a reminder.
Dropshot is what worked best for me when I was there.
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George Cawthorn : Bassin' USA Field Writer - CA