Or lock it and still lose it? With CTC cash I bought a bunch of expensive locks and watched two burly ‘bike thieves’ smash into them within seconds. But it’s possible to make life difficult for professional thieves: there are locking techniques that will make your precious harder to half-inch.
In short -
1.) Use the shortest U-Lock you can
2.) Lock it around the head tube (not the top tube) at the highest point of a rack.***
3.) Check on your bike off and on between pints at the bar. Locks don’t guarantee security – they buy you time.
4.) Thieves are looking for low hanging fruit – don’t be low hanging fruit.
***(They said bottom bracket in the article, but later they cautioned against locking close to the ground because thieves could use the ground as leverage as pictured above. So unless you’re hanging your bike upsidedown, I’m recommending headtube. If I’m wrong call me on it and detail why.)