Originally Posted by
Northwestrider
IMO the best security is to use a cheap bike with your fahgetaboutit lock if your going to leave it unattended for more than a few minutes. For saddle security, don't clamp the seat post with a quick release lever, use the old fashioned bolt with nut, if you don't wish to carry your saddle with you. Again use a cheap saddle.
The old fashioned bolt with nut is not enough for a saddle. Lock the saddle to the frame using a bicycle chain. Use this approach and you can feel comfortable using a $100+ leather Brooks saddle. For those who are truly paranoid, use a locking skewer for the seat post in addition to chaining the saddle to the frame.
Do these things and you can lock a bike ANYWHERE. The chances of anything getting stolen are very, very minimal. Use only a bolt or hex nut and your seat will be gone!