I put locking nuts back on, if they stake your place out they just need to bring tyres and nuts and there off.
Never under estimate the cunning of some thieves.
Does this work Dave? Anytime I ve had a car with locking nuts and I lost the key (happened more times than I should admit) if you can get a good enough grip with "locking multis" have been able to get them off! I'd imagine without a wheel and it's recess to hinder access they would be easily removed? Ofcourse the thieves still need to bring wheels which is a major deterrent in itself.