I started to post how this can be done in calm conditions but unless you are overestimating the winds, you are pushing survival conditions for singlehanding a 2 man boat.

National Weather Service 20 kts on a big bay means 3-5 ft swells with solid whitecaps and the puffs will blow spray off flat water. On a 2 man boat with good crew, I am real careful. Under these conditions anchor the flipped boat, pick up your buddy and come back with help.