Originally Posted by Boudicca
Frame mounting is no good if you want two water bottle cages and large water bottles in them. Believe me, I've tried it. I also go for balancing the u-lock through the holes in the rack, but without the cool blue and yellow ribbon, it does tend to bounce off when I hit a pothole. I guess it's a good lock. It has survived that several times, and even survived being run over by a car the last time.
Bungie cord! I carry mine like landstander but I have two 24" bungees that fit tight from the lowest attachment points on either side (sorry no camera, they hook down by the dropouts). I usually just slide it under one of the cords but it will not bounce off ever if you use two cords. Even if the second cord is under the lock it adds some friction and it's generally not going to come off except in rare cases. Also two cords allows you to carry the occasional box! Possible to carry more than just a lock as DocF suggests.