Stealing is not common in Denmark. I can go out shopping on my bike with a trailer and I don’t have to worry that somebody steals it while I’m picking yoghurts from shelves. How is it going to be in Poland? I will have to buy heavier locks and lock both my bike and the trailer. And not only lock the wheels, but also tie vehicles to some heavy object so they can’t be loaded on a truck and carried away for lock removal.