We had a dinghy "borrowed" and set adrift somewhere where it was about 1.5 mi. back to the marina by land. Fortunately, we were with friends, and they gave us a ride back to the marina, and the next morning, helped us find the dinghy.
We have also had a visiting dinghy tied up to us poorly, that went walkabout while we were all below having a chat.
And then there was the time they stole a brand new dinghy off the stern of our boat
, and set it alight. We found the remains, and eventually got new tubes. It is extremely inconvenient to have one's dinghy stolen: one has to go into marinas
, and find something that will do for you for a dinghy. Often no spare ones around. I certainly felt quite angry about it. An approximately $5,000 hit, way back when that was more money
than now, dinghy repair, plus outboard motor
I hope your friends get their dinghy back. Sometimes, it is better to say it went missing, rather than was stolen. Ours was found with the hypalon burned up after I put an ad in the paper saying it had been stolen. The policeman said they probably burned it to destroy DNA evidence.