you can't push start the car if no power is going to the ecu, fuel pump, etc. which are ran on the ignition wire. if you decide on using the ignition wire, make sure you tag it behind the fuse box so the punk can't hot wire it on the other side of your ignition cylinder.
another quick deterrant is to take out your ecu fuse and insert a dummy one, but you'll reset it each time you do it.
as a must: GET AN AUTOLOC!!!! :thumbup: