This scam has been widely publicised locally and in Thai and international media. Despite this many people are still unaware of the problem. Others may not realise how much of a problem it is. The scam involves damage caused (whether actual or pre-existing) to jet skis while they are on hire.
Even after negotiations and intervention from the related embassies and agencies, a payment of around 10K baht is still required for the damages. Thus, you must exercise extreme caution when doing equipment loans or doing sports on vehicles provided by the shops.