Duke William of Normandy won the battle because was well prepared and had a good army. They prepared carefully for the battle. The Normans had knights on horseback who were skilful fighters.
A utility knife, metal ruler, and a hammer can be faster than trying to carefully saw an opening. Score the drywall a couple times till you are most of the way through, then just knock a hole with the hammer and break the drywall back at the score lines.
1. Cut a rectangular patch from apiece of drywall that is large enough to cover the hole. Place it over the hole and trace its outline on the ceiling with a pencil. Cut out the outline with a drywall saw.. Place the drywall patch in the hole and screw it to the wood. Cover the edges of the patch with drywall mud, using a 4-inch knife, and lay paper drywall tape on the mud.