I lock through the rear stays as well, because my dropouts on my roadrat are spaced 130mm and with the krypto mini you can remove the wheel, because it's so small, and then take the lock out at an angle through the stays. Plus it fills the lock more = harder to get tools in.
Don't forget this....
http://www.sheldonbrown.com/lock-strategy.html
I lock through the rear stays as well, because my dropouts on my roadrat are spaced 130mm and with the krypto mini you can remove the wheel, because it's so small, and then take the lock out at an angle through the stays. Plus it fills the lock more = harder to get tools in.