I kinda started this off earlier in the thread - if i had known it would ruffle this many feathers i would probably have kept schtum, but what is done is done as they say.
The following is my opinion, take it or leave it.
I know of 2 ways to break into the boot and one way to break into the bonnet on a 75/ZT. This information has come to me from a number of sources, but mainly through DIY dismantling of varoius bits and pieces for maintenance / repair of a number of cars and seeing how these things work. In the case of the 75 none of the ways i know i would class as 'safe' information as they are "relatively" quick and damage the car - this information will never be posted openly on a forum by me and is highly unlikely to be given out by PM, regardless of post count or length of term posting on here.
This is not the case with the F/TF however, i know 4 ways of boot breaking on the F/TF, three of them are unsafe, but one, unofficially known as the Treffen method, takes 2 hours, requires access to the cabin and a partial strip down of the car (tends to draw a crowd) and is tricky even then. But it is possible and results on no damage to the car. It also only requires a 10mm ratchet spanner. This method has been posted on a number of forums and i have even demonstrated it live at the Heritage Motor Museum in a lecture theatre for MGF10.
This is my definition of a 'safe' method - time taken, few tools, noticability by the general public, no damage to vehicle and in the case of the Treffen method, full access to the cabin is necessary - this and the time needed tends to rule out thieves using it.
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Forums are read by anyone and everyone. Use caution when posting information about the security of the car. Professional car thieves do indeed know all the tricks, but there are amateurs out there too, how many of them are computer literate? And it only takes one to steal your car.