I'm thinking of getting a coil lock for my bike when I move into college in the fall, but the coil's just too hard to handle and use; it's hard to wrestle it around both tires. The alternative is the U-shaped lock, which is probably a lot easier to use. To you college students who lock their bikes on campus, which type of lock is easier to use, and is more secure? I was thinking of getting two U-shaped locks (one for each wheel). What did you find to work better, and what do most college students use? Thanks.