Transponder Immobiliser

[slappy]

If they want it, let them have it. Its only metal (however much you like it) and can be replaced. No point in putting yourself in harms way for a bike.

I do like the exploding seat idea above though. Something that can be operated from a distance once they think that they have got away with it.

Not too big an explosion though, just enough to rip their balls off and totally shred their rectum.