You're probably defending against the semi professional thief who cases the area and goes out with a shopping list, your bandit was prolly required for the frame to replace a bent one, or for motor parts etc... unless you have a totally unique bike the methods I mentioned will still work, as their standard tools are "portable" power tools (battery jobs) bolt cutters and crowbars. CCTV and lighting helps a lot too, just make sure it can't be vandalised prior to the scheduled theft. since these thieves go around with shopping lists, you can also lose by simply visiting someone overnight (happened to me in brum last year with an xs11) it gets spotted and taken in the wee hours, so the precautions I describe also make you friendly towards your guests. BTW, in your case try google alerts, they even index ebay sales, you never know it may turn something up. cheers