Fins on wrist while on the trail line,grab ladder, get a knee or foot on and up. Nobody is getting my fins. The boat we were on in Puerto Rico asked for fins to be handed up. I informed them that my student and I would not be doing that prior to getting in. The DM was fine with it. I asked him about it on the way back in. He said the reason they did it was because you would not believe the number of people who had never gone up a ladder in training with fins on their wrists that they saw. People either handed them up or put them on the side of the pool. One instructor from the states told him they don't show students slipping fins on wrists until they take their boat diver class. I said are you serious? He assured me he was.