Last year my wife's business had a 55' trailer stolen: theives backed a semi up, smashed the hitch lock (it was in pieces on the ground) and drove that bugger away. If pro thieves target your stuff, it's gone.
The more locks and crap you put on a bike, the more likely amatuer thieves will trash it. I now put GPS on my stuff.
http://www.bikebone.com/page/BBSC/PR...king/iFind1000