Of course this won't happen in calm seas. And the trouble with your method is
that while you're winching him up from within the cockpit, he is swinging
helplessly and crashing against the topsides as the boat rolls. If you were to
rig and operate the lifting device just above the MOB, you could not only see
what you were doing, but also control that swinging if need be while operating
the lift with the other.

John

wrote:

For MOB, we have something rigged up that goes from the mast to the
jib winches and that allows me to winch my husband aboard or vice
versa.