Another reason to include one of the seat-stays or chain-stays in your Sheldon-Method lockup is to reduce the room a thief has to insert a bottle jack. This is also why a thinner shackle U-Lock, like the OnGuard Mini, is a better choice than bigger, beefier locks with wide shackles. You just can't slide a stubbie jack in there.

As for front wheels, I'm using the Velo Orange security skewers. It's key just a standard 6mm allen-head security socket wrench, but this is a pretty rare tool, and the lock is a dead-simple but ingenious design that will defeat a set of vice-grips... those nice, knurled ends just spin uselessly without the key. It's also damn well made, with high quality aluminum faced with steel where it clamps to the dropouts.

If the V.O. skewer style becomes widespread, then thieves will stock up on the needed wrenches... in the meantime, it was 15 bux for a set of front and rear skewers. including the wrench. A lot better than what Pitlock charges, or what the LBS charges for a quality set of ordinary skewers.