Simple solution. Gaza is a relatively small area, about 58 square miles, and 2/3rds of it is about 5 miles across. Israel could erect several inexpensive, 100 ft. towers, and fly a tethered surveillance blimp, and have surveillance over the vast majority of Gaza.
The, set up a few teams of artillerymen, with WWII-era 105mm Howitzers and computer fire control. Hamas would be incapable of setting up a rocket to launch without having a 105mm round dropped right on target *prior* to launch.
It is fast, cheap, and quick. The entire system could be set up in a day.
I’ve wondered about something like that but didn’t know the specifics — so why the #%#%#%%# doesn’t Israel do this? Seems like it would be a great way to be able to take out Hamastan terrorists wherever they try to set up their rockets.