mfsob
pose one side leaning in and the other side leaning out to account for the listing of the ship ... anything to make the build more complex!
It's interesting that you say that.
That's why gripes are used. There is a strongback, a wooden or metal pole, padded in canvas that spans the davits, and against which the gripes hold the boat firm, to keep it from swinging into and out of the davits.
Boat Crew generally needs the Department Head and the OOD's permission to "slack gripes" if they are pulling maintenance on the boat. At least on a ship small enough to have radial davits.
Merchant ship practice could be different--but, I know King's Point has been using Knight's Modern Seamanship a long time, too.