An alternative choice, a lot of pilots like the Master Airscrew props.
I've had them for my SPARK back in the day with no problems.
They also add a bit of color to your aircraft...
I am Amateur Radio Operator. Commonly called a Ham.😉
I use one of my drones to hang "wire antennas" from trees. I have successfully installed at least half a dozen on my property and several for friends. One of the antennas is an "end-fed that is...
Maybe, but once someone has made up his or her mind to create that kind of mayhem, is committed to a course of action, and has assembled the necessary weaponry and other paraphernalia, the threat of a drone-intervention is unlikely to deter them...
Arm the teachers and others.
A shooter might think twice about attacking the innocent if everyone is armed.
By the time the drone team shows up with a drone, the problem will be resolved.
☮️