Locks that work

That granit in the picture is doing absolutely nothing, apart from when they steal your wheel, they'll have to cut it off at home... There is no necessity for 3 d-locks, if they can cut one, then they can cut three. (assuming similar quality)

Considering what other posted, I think I can attach the front wheel to the frame to the pole. Also, if I were to leave locked up somewhere I'm sure a thief would think twice about the amount of work he has to do to get through all 4, no?