A guy laughed at me putting one of those old locks on back when I had nice old cars. He reckoned he was an ex car thief and said they carry a piece of pipe which would snap them in half with every little force. I stopped bothering. On one of my good cars I had an immobiliser fitted but not sure it did much either but had a flashing light to looks like it did.
Still very few cars are actually stolen when you consisted how many cars are owned in vic.
Probably depends on the brand of lock, if you use good steel, you aren't snapping it with a bit of pipe. Club locks maybe were well publicised but crappy.
On youtube they say the pro's used to cut the steering wheel. There are you tubes of them drilling out the locks.
One guy told me his idea for a anti-theft device for old cars.
He said you put a little fuel tap ( or switch to a solenoid ) under your dash and turn it off when you leave the car.
Anyone stealing it doesn't know about it, so they steal the car, and it runs out of petrol 3 minutes lately, when they proceed to shit themselves and run off.
Similar devices , Electric fuel pump with hidden switch. yeah they can figure it out , but do they want to be messing around under the hood ?
Immobilisers are like a sophisticated variant. You won't stop a smart professional who has targeted your car, but most thefts are dumb kids being opportunistic.
I wonder why car makers continually waste money with built in steering locks, that can be easily broken just by wrenching the wheel.
I think it was SAAB's used to come with the ignition key in the centre console ( way before it was fashionable ) and a transmission lock instead of a steering lock.
If you stole an Auto, you were stuck in park. If you stole a manual, reverse.