In recent times there has been talk of unscrupulous Jet Ski operators scamming tourist in Pattaya. The scam consist of the tourist renting a jet ski, apon return of the jet ski the operator will claim the tourist has damaged the Jet Ski and will demand money for repairs. What the tourist dosen,t know is that the damage was there all along. All though I personally haven't heard of any such incidents happening on Koh Larn I think it could happen. Before you rent any vehicle in Thailand It would be a good idea to take some snap shots. It only takes a few moments and it could save you alot of money.