I plan to rent a bike in PV and ride down to Manzanillo, splash around in the ocean, etc.
So just how does one avoid theft of one's belongings on the beach? I'm thinking especially of my eyeglasses/sunglasses which won't fit into one of those waterproof containers that I hate wearing around my neck. I wouldn't be keen on having my shoes stolen, either. I can't pedal very well in cheap flip-flops. There won't be anyone to leave behind on the beach to watch my things.
And what about the rental bike? Do they come with locks?