Find Short Circuits the Easy Way?

That may not do what you think. It is essentially what we used to call a "toner" which we used to use for telco circuits. It is more accurately a circuit tracer rather than a "short finder."

telco toner generator tracer - Google Search

The way they typically work is the box with clip leads has a switch, either generates a tone, usually 1 of 2 selectable, or provides weak "battery" for continuity and can be used with a buttset for "talk" power. The tracer or receiver is wireless, and picks up the weak toner signal when run along a wire

I'm sure that if you do have a short, it will react differently which you could find with practice, and "open" similar