You can park for free at Hinman island park but there is not alot of spots. You will have to park on the tube chutes side. Its 20$ to park and that is also where you get the 5$ bracelet.
Hinman island park has free parking and free water access. Landa park which is adjacent charges for parking and water access. I believe they charge for the bracelet at the gates
Payment is not optional you park at own risk towing if you dont doenload the app and pay to park on tubeshoot side or park side
Parking payment optional.
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