Ray, you said you "ran over" the MOB (pfd) twice. If you were able to maneuver close enough to "run over it," I don't understand why you weren't able to recover it. If you can get that close, then you should be able to hook it with a boat hook and pull it out of the water. Did you have a person with an extended, telescoping boat hook, positioned on the side where the boat would pass the MOB?
Years ago, an Annapolis Sailing School instructor taught me that, after you steer the boat to windward, while it is coasting toward the MOB, you should steer the boat as if
you're trying to run him down. (Obviously, you shouldn't actually
run him down.
) The point is that, you want to recover him as quickly as possible, and preferably on the first attempt, so you want to get as close to him as possible. When you coast up to him, you should be going very slowly, and you can bear away from him a bit at the last moment, so you don't actually run over him.
In a MOB situation, in addition to the boat hook, you should also have a throw bag or similar device at hand, so that, even if you don't get close enough to snag the MOB with a boat hook, you can throw a line to him and pull him alongside. If you don't have crew to help you recover the MOB, it would probably be difficult for you to move from the helm to the side or bow of the boat in time to reach him with a boat hook, but you can probably throw him a line without leaving the helm.