This is getting a bit off topic:

I wouldn't rely on the club to protect your car. I saw a TV News Magazine article a few years ago where they pointed out that although the club might take an unreasonable amount of time to saw through, sawing through the steering wheel and removing the club doesn't.

I just drop my club on the wheel without locking it. At least that way there's a chance a thief will chose an equivalently valuable (to him) car without a club.