Well, dolphins, actually. Big sis, little bro & co, me & a young friend of big sis went to the beach in Gulf Shores for a couple of days. After we arrived we took a "dolphin cruise".
Our intrepid sailors
What the boats looked like
The technique was pretty neat. The boats would line up parallel to each other, and sail at about 20 knots or so, generating a decent wake. The idea was to attract dolphins, who, like teenage surfers, evidently just love a good wake. Does it work?