I have gone out of the heads and head towards the HMAS Canberra, when I see a dive boat there I avoid the area because of the difficulty of seeing a person in the water. When the dive boats are not there, I go over the top running my sonar just to look at the image that it has.
Picking up and dropping off at a pier where there are divers is an awkward situation. I think basically if there is a danger to the person in the water, then the boat skipper must avoid putting that person into danger.