I'm looking at the diagram Jack posted and trying to figure out a couple of things. OK, assume wind at 30-40 knots and combined wave/seas of 10'. For this discussion let's say that there is a reef (or two) in the main and the headsail is furled in 20% (the sails were set to match the conditions). You immediately heave to after the MOB call, so far so good, then you go directly beam to the wind (and temporarily get knocked over pretty good I would guess). Then you go DDW in a wing on wing configuration surfing over the crests and then pull out and get knocked over again while trimming the sails to try and go upwind. And you expect to be able to keep an eye on the MOB during all this? I don't have a better plan, in those conditions I think you (the MOB) are basically dead, but dropping the sails (after initially heaving to) and motoring into position upwind of the MOB would seem to be simpler. I confess to not practicing MOB much, except when I lose a hat or I see a fender or something floating near by, generally in winds under 20 knots.
A couple of things. (OK - more than a couple)
This is from a close reach / close hauled position.
The boats I have in these conditions have storm jibs, not furled genoas.
Tending to sails will take eyes off the MOB.
The first thing we do on an MOB is deploy a an MOB pole and hit the MOB button.
The first heave-to does see the boat heel a lot.
The main is sheeted in hard and stays that way. The DDW is with sails sheeted in. We do not touch the sails
, unless we need to ease the forsail to get the bow up on the last heave -to.
In big winds this takes under a minute.
Because the boat is heeled on the last heave-to, there is less distance to reach to get the MOB. (I like to come in with the MOB at the shrouds.)
I have done this hundreds of times - I teach it.
We lost a TV antennae off Cape Scott one time in 20 knots winds and recovered it.
I also lost a lifering in Johnstone Strait in 25 knots and recovered it.
In those conditions we are tethered. Heaving-to to recover a tethered MOB would be easier.
BTW - downwind is a whole different story as you have to come about. But we still heave-to at the end.