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.
If the hole is too small to get your hand inside, you can place a temporary screw in the center to use as a handle. Install the other piece of wood on the opposite side of the hole and secure as before. Once the wood is in place, secure the drywall patch and youâre ready to mud and tape.