I once met a guy who had a fully loaded EK and sold him a hood lock. He had everything, kill switch, a hood lock, GPS tracker, etc and like you said the car got towed. But once the GPS was activated he was able to find the car within hours. The thieves couldn't get the hood open to disable the alarm and GPS because of the hood lock. So having a combination of everything will help you.My friend had a killswitch installed in his car. Just a simple flip switch that cuts off everything. Not possible to start unless they can find the switch but he had it hidden good. I had a good solid 4 hours to find it on a road trip and couldn't find it. But that's pointless if a tow truck comes to picks the damned thing up. Best I can guess is park it within sight or somewhere with tons of light so you can see. I'm generally paranoid with where I park my car so nothing too bad happens to it, only got my windows smashed once.