I agree with Dougie,
I practice MOB drills ever time I take people out, I even used to do it when I drove for Sabre and the customers loved it.
I go through the drill once with me at the helm and everybody on the crew doing different jobs then we go through it with everyone of the crew at the wheel taking the opprtunity then to explain wheree the kill chord is and that it is to be removed once the wet person is alongside the boat but before recovery.
I've been in a few times when I was learning how to get a Rib into EV mode(Enhanced Velocity) and the one thing i recall is that the water is hard as well as cold and it always steals your Killchord and it can disorientate you, allowance needs to be made for this when communicating.with the person in't water
I teach the Williamson turn with the emphasis on the very slow speed approach to casualty, but if I'm not happy with the boat handling I also teach them to lob out the Perrybouy on a rope and circle around the swimmer AT A DISTANCE OF 5 METRES This brings the rope/bouy to the wet person.
Recovery if possible from the transom (killchord removed first) if the casualty is unconcious /injured the it's gotta be from the side and I deflate a couple of tube sections if it helped.
One last point during the drills empasise that anyone who goes in is not too move towards the boat until told to do so by the helm, reinforce this when someone is in the water, You don't want anybody swimming into your prop!
Happy new year