I am installing dry wall on the second floor of a small house. There is really little room to maneuver or bring in a lift. I mounted two 2x4's to the wall studs by hinges, screwing the hinges up leaving only a half inch between the top of the 2x4 and the ceiling joists. leaned the dry wall against the 2x4's and lifted the loose ends of the 2x4's. I had nails in the joists at the other end with rope loops to put around the 2x4 ends to hold them up. It held the dry wall up snug against the ceiling joists while I screwed it fast. Not sure if there is a better way, but this worked fine for me working alone.