Over the years on ScubaBoard, I have read enough stories about careless boat operators running over (and even killing) divers in the water despite their boat crews doing everything they could to prevent it.
Years ago in South Florida I boarded our boat after a drift dive to hear quite a tail. A solitary hunter had surfaced far from both his boat and his flag (which he had attached to the reef). The boat drew did not have a radio on, so our crew went to them to tell them where their diver was. They went to pick him up and then went to pick up his flag, which they believed they had to rip off the reef by gunning their engine. As they did that, they still did not have a radio on, and they ignored the horns, sirens, and loudspeaker from our boat telling them they had taken the wrong flag.
Well, that explained what happened to the flag I was towing.
Years ago in South Florida I boarded our boat after a drift dive to hear quite a tail. A solitary hunter had surfaced far from both his boat and his flag (which he had attached to the reef). The boat drew did not have a radio on, so our crew went to them to tell them where their diver was. They went to pick him up and then went to pick up his flag, which they believed they had to rip off the reef by gunning their engine. As they did that, they still did not have a radio on, and they ignored the horns, sirens, and loudspeaker from our boat telling them they had taken the wrong flag.
Well, that explained what happened to the flag I was towing.