i used to use a mini and just lock the frame when i had my stock wheels, but now that i have new wheels i use my mini ls for the frame and front wheel, and the mini to lock the back wheel to the frame.

i still worry about it too. i normally don't leave my track bike locked up outside too long though. if i'm going to a bar or something, i ride my conversion.

My system: U-lock (abus sinus) around chainstays at the rear wheel to pole. Other U-lock, that I will leave locked at school to save commuting weight, locks front wheel to frame. No QR anywhere, no decals on the frame. Here, component theft is practically nonexistent except for the odd qr seatpost+saddle theft. If I buy one of my dream saddles (selle storika, slr xp or flite ti gel), I'll fill up the bolt heads, though.

Well I am only in Boston... sounds like there's a bit less worry for bikes here than in NYC. I havn't had any problems but I do think I wouldn't mind getting a mini for my rear wheel. It seems slightly pointless though, since once they get the main lock off they can just throw it in a car and pick it at their leisure, but I guess it looks more intimidating. I don't worry about my saddle because it's a cheapo and I can get another cheapo easy.

i filled the heads of the allen bolts securing my seatpost, stem and bars with krazy glue and dropped a ball bearing in each one.

it's fairly easy to knock loose with an awl and hammer, but might deter quick theft by someone walking around with a set of allen wrenches.

Does anyone use these? Is it possible to slide these into my IRO hubs? I have never messed with the skewers.

Having a fixed is effective enough. The robber will either fall on his first turn, when he tries to coast.

Enough bikes have been posted as stolen on this board to show that this line of thought is beyond flawed. Lock it up.

I've toyed with the idea of trying to rig up a system for a fixed gear anti-theft system. Mount a rear brake (or if you ride brakeless, front brake) lever on your bars, and have it activate a canister of pepper spray contained inside the bars. Use brake cable to direct the spray at where the thief's face will be when he's riding.

Of course, I haven't worked out the mechanical details of the system since ya know, I'm never actually going to do it.

that's awesome. you might want to add a safety/off switch you can activate while riding. then take it off safety when you lock it up.

oh yeah. never thought of that but of course it makes sense