I suppose a 9mm gloc is outa the question then?
good old prickly shrubs help also ...We have put carpet grippers along the top of our fence, and when we informed the cops of this, they just said well the fence is over 6 foot, so that's ok! They didn't seemed perturbed by it! We shall be installing a huge gate too, complete with electric fencing! It is drastic but it's terrifying to think what these people are capable of. We've not been in the property all that long, so it was one of those jobs that we intended to do in the spring, but looks like it will be brought forward now.