I use the smallest kryptonite lock (mini 5) like based sheldon recommends. he says you can get away with just locking the rear wheel inside the rear triangle but I typically do top tube/seat stay area.
then again I'm not in an high theft area like NYC and I take my bike inside if it would be on the street for more than a few hours. what I focus on are deterrents, like track nuts on the axles instead of quick releases and leaving no accessories on the bike.
anyone ever tried one of these, though? you can't put it in a back pocket like the mini 5 and idk what the point of locking the rear wheel is
>bonus vid of rear wheel getting btfohttps://www.youtube.com/watch?v=H9fLtdZyX-A 