That's one of the fastest ways to get caught too. If you see somebody dicking with a motorcycle with their helmet on, you probably just think it's the guy dicking with his own bike. If you see a group of guys jump out and load it into the back of a van, chances are you'll raise an eyebrow. Not to mention it's easier to get away on a 150mph+ motorcycle than it is in a 90mph van. I mean yeah, they want it? They'll get it; chances are they're going to look for the easiest thing to steal so best bet is to make it look like a pain in the ass. I park in an area that is motorcycles only (cement pillars no cars can fit through all the way around) while I'm in class, road lok, steering locked, buying a front disc lock and immobilizer. While I'm at work, I'm setup right in front of motorcycle parking so I keep an eye on it anyway there. I mean really, there's a point where if they steal it then bravo... I'll be pissed and sad, but impressed.
Still, people screw with my head... Thieves suck; end of story.