Old age question with no real answer other than if they want it, they will get it, so by making it harder to get, they might not be bothered etc etc etc etc 10% of the value of your bike should be spent on security - so they say. I have the factory fitted alarm/immobiliser, as well as factory fitted Datatool. I also have a cheap sim card that pings me an SMS every 30 seconds if it moves out of a designated area, & my bike is stored in a shipping container with 2 abloy locks - #paranoia However whilst i am out on the road, due diligence is the key, & not being further than earshot/eyesight from your bike. And would i stop a thief/thieves? Depends on how many, and what they are carrying.