Kryptonite does make a bigger version of the Fahgettaboudit: http://www.kryptonitelock.com/Produc...=1000&pid=1093 I used to have one. It was a little overkill for what I actually used it for, which is parking at a grocery store for 20 minutes on a random schedule, so I went with an Evolution Series 4 next time. Anyway, if you want such a beast, it does exist.

On the original topic, I'd lean towards the two U-locks and then a non-coiling cable. I'd use one U-lock that's long enough to get a parking meter, both seatstays and the rear wheel, then use the other one to lock the front wheel to the frame (a mini would probably work there). Lasoo the seat rails with the cable and put the free end over a U-lock shackle.