Pale Rider
Legendary Member
especially those with an extra long shackle.
It is best to have a snug fit to prevent someone breaking the lock by leverage.
No easy way to achieve this all the time, unless you always lock the bike to the same object.
You could buy an extra long D lock, but they are really aimed at locking two bikes, either side of a post.
The best form of security is to deny theft opportunity.
Sadly, for a lot of us that restricts the use to which we can put our bikes.