i use a fahgettaboutit mini around the chain stay/rear tire/rack, abus ketaro around the front tire/frame/rack, as well as a kryptonite 3/8th inch cable to secure my seat/cargo rack/front tire again. bike theft here is ludicrously high. as i already mentioned, this didn't even completely work (they stole my handlebars at the stem and clipped all the cables).... working on something to take care of this though.