Alan,I was thinking of doing the same thing, then I saw how easy it can be to remove locking wheel nuts :crazy: Had a problem with the MG just after we bought it, realised it had locking nuts but no key. Took it to a guy I know in a tyre place and he had all four locking nuts off the car in about 2 minutes. All the kit he used is available from your local Halfrauds :sick:
Think you would be better to use a decent chain and padlock or something like a heavy duty bike clamp.
Mark