The same thing happened on Pattaya beach in front of the BIB station. We watched it all unfold on some Indian looking guys. They were with another Indian looking guy who seemed to be their guide, but he he was speaking fluent Thai on the phone Who can speak fluent Thai but doesn’t know he jet ski scam ? Hmmmm.
Anyway the damage is done when they drive the jet skis back on to the beach at speed every night. If you are ever stupid enough to rent a jetski here film them the previous evening driving them back onto the beach