At my old house (where my saff was) i used to park my mums 405 infront of the garage door, then my daily runner behind hers (both alarmed) so they'd have to move 2 alarmed cars before they got in the garage, then had meaty posts behind the garage door (3 of em) and i'd usually take a wheel off and put it in my room. sounds ridiculous but it works
since i've got my new house ive had some problems.... not got the saff anymore but still got the track slag out front (no garage) had one car keyed, one car egged and another (shitter) nicked. frickin TOP area aswell.... just had bad luck i guess. since that i've put up night vis CCTV on the chimney facing all directions, hooked to a DVD recorder. got a good picture of a lad chucking eggs on my car, luckily i ran into him one evening (dark alleyway) and sorted it. Never had probs since, CCTV in a subtle place is a good buy
Steve